Abstract: In a mascara brush comprising a plurality of bristles which are held between two intertwisted wire sections, it is provided, with a view to obtaining an optimal transfer effect, that at least part of the bristles form loops.

Abstract: An application device for applying a cosmetic product includes a stem and an application element on the stem. The application element includes a plurality of bristles configured to apply a cosmetic product. The plurality of bristles include at least one first bristle having a surface with at least one helical groove extending over at least a portion of its length. The first bristle can additionally have a cross-section with at least one hollow portion. The hollow portion may be formed on the surface of the first bristle or inside the first bristle. Optionally, the plurality of bristles can include at least one second bristle having a cross-section with at least one hollow portion. Again, the hollow portion may be formed on the surface of or inside the second bristle. The second bristle may further include a helical groove extending over at least a portion of its length.

Abstract: A device for packaging and applying a substance, in particular a cosmetic, the device comprising a receptacle for containing said substance, an applicator provided with an applicator element, and a wiper member having an elastically deformable wall with at least one slot through which the applicator element can pass and defining wiper lips, wherein said elastically deformable wall is suitable, under the effect of axial stress exerted by the applicator, for taking up different first and second configurations respectively during insertion and withdrawal of the applicator, and wherein said elastically deformable wall is made to have an initial shape at rest and in the absence of the applicator that is not plane, said initial shape being selected in such a manner that the wiper lips press on the applicator with different amounts of force respectively while the applicator is being inserted and while it is being withdrawn because of the deformations to which said elastically deformable wall is subjected to make it

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: In a hair coloring or cosmetic unit, in particular mascara unit, comprising a receptacle for liquid take-up, which has a basic body and a neck of tapered diameter as compared to the basic body, and a closing cap to be placed on the neck, a rod with an applicator being fixable on the inside of the closing cap, and a stripper being provided in the vicinity of the neck for the applicator to be stripped upon withdrawal from the receptacle, it is provided that the applicator is connectable to the rod or the rod to the closing cap by the user, after the user has selected a preferred applicator or rod from a plurality of available samples thereof, and that the filled receptacle comprises a special closing and sealing device without a rod or an applicator.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A container-applicator system for cosmetic or like materials such as creams, powders, liquids and gels. The applicator of the system has an elongated tip for metered application of the material, located at the distal end of a stem which is carried by a cap so as to be inserted into and withdrawn from the mouth of a container of a cosmetic product to be applied. The tip is a molded elastomer element having a distal end formed with a shallow cup, which may be oriented at an oblique angle to the stem. A flexible wiper, mounted in the container mouth, removes excess material from the cup as the applicator is withdrawn from the container.

Abstract: A device for packaging and applying a substance, in particular a cosmetic, the device comprising a receptacle for containing said substance, an applicator having an applicator element of elongate cross-section, and a wiper member for wiping the applicator element when the applicator is extracted from the receptacle, wherein the wiper member has a slot whose edges are substantially touching at rest in the absence of the applicator, and wherein the device further comprises a guide member for guiding the applicator while it is being extracted from the receptacle and for keeping the applicator element away from the axial ends of said slot while it passes through the wiper member as the applicator is being withdrawn.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A bottle/cap assembly with sweep-and-drain action includes a bottle, a cap and a sweep-and-drain mechanism. The bottle has in series, from the bottom to the top, a closed bottom, a body sidewall, a cylindrical neck sidewall, and an open top. The cap is configured and dimensioned to be rotatably received about the neck sidewall and includes a closed cap top to close the open top and prevent egress of liquid from within the bottle. The sweep-and-drain mechanism includes (i) a circumferentially spaced plurality of vertically extending grooves or slots in the bottle extending downwardly from the open top through said neck sidewall, and (ii) a circumferentially spaced plurality of radially extending vanes or wipers projecting downwardly from the closed cap top towards the open top.

Abstract: A device for packaging and applying a substance, in particular a cosmetic, the device comprising a receptacle for containing said substance, an applicator provided with an applicator element, and a wiper member having an elastically deformable wall with at least one slot through which the applicator element can pass and defining wiper lips, wherein said elastically deformable wall is suitable, under the effect of axial stress exerted by the applicator, for taking up different first and second configurations respectively during insertion and withdrawal of the applicator, and wherein said elastically deformable wall is made to have an initial shape at rest and in the absence of the applicator that is not plane, said initial shape being selected in such a manner that the wiper lips press on the applicator with different amounts of force respectively while the applicator is being inserted and while it is being withdrawn because of the deformations to which said elastically deformable wall is subjected to make it

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A cosmetic dispenser, includes an applicator having an applicator portion and a cap portion, the cap portion having an inwardly facing screw thread; a container member having a body portion defining a product reservoir and having a neck portion extending from the body portion to receive the applicator, the neck portion having an outwardly facing screw thread for threadedly engaging the inwardly facing screw thread; and a smooth-walled thread guide portion extending from one screw thread of the inwardly facing screw thread and the outwardly facing screw thread toward an opposing screw thread of the inwardly facing screw thread and the outwardly facing screw thread, the thread guide portion being sized to slidingly engage the opposing screw thread so as to guide the opposing screw thread to the one screw thread in proper alignment for threaded engagement.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A device for packaging and applying a substance that is in liquid, semiliquid, or powder form, in particular a cosmetic, includes a receptacle that is open at one end and suitable for containing the substance, and an applicator with a stalk provided at one end with an applicator element and at its other end with a handle member. The applicator element is inserted into the receptacle and is withdrawn therefrom in contact with an elastically deformable wiper member. The wiper member is constituted at least in part by foam with at least 5% of open cells.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the and of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A device for packing and applying a substance that is in liquid, semiliquid or powder form, and in particular, a cosmetic. The device includes a receptacle that is open at one end and suitable for containing the substance, and an applicator including a stalk having an applicator element at one end and a handle member at another end. The applicator element is inserted into the receptacle and withdrawn therefrom in contact with an elastically deformable member. The wiper member is formed at least in part of foam comprising at least 5% of open cells.

Abstract: The process according to the invention comprises twisting a plastically deformable wire, typically of metal, so that it imprisons fibers within it, with the parts of the fibers projecting from the wire forming bristles in a helicoidal spiral, and of shaving off some of the bristles in predefined angular sectors by using the twisted wire to guide the components causing the total or partial ablation of the bristles.

Abstract: A container for pasty cosmetic product permits access to a larger percentage of the contained product. The hollow container has a wall that defines an internal chamber. At least a portion of the wall is flexible. A neck provides access to the internal chamber. An applicator projects into the container and is attached to a cap which closes the container about the neck. Otherwise inaccessible product is deposited on the applicator by squeezing the flexible portions of the container wall, thereby avoiding waste of product adhered to the innerternal surface of the container.

Abstract: A self cleaning dip in package is disclosed. The package includes a vial having an opening through which a user may access liquid stored within the vial. The opening is defined by an inner wall of the vial which provides access to the contents of the package. The package also includes an applicator adapted for insertion within the open end of the vial to access the liquid stored within the vial, wherein the applicator is coupled to a handle and the handle is selectively coupled to the vial for storing the liquid within the vial. The package further includes a first wiper coupled within the opening of the vial such that the applicator is wiped of excess liquid when the applicator is withdrawn from within the vial and a second wiper coupled to the handle such that the second wiper wipes the inner wall of the open end of the vial as the applicator is inserted into the vial. A process for filling the package and a venting system are also disclosed.

Abstract: A device for packaging and applying a substance that is in liquid, semiliquid or powder form, in particular a cosmetic, includes a receptacle that is open at one end and suitable for containing the substance, and an applicator including a stalk provided at one end with an applicator element and at another end with a handle member. The applicator element being inserted into the receptacle and withdrawn therefrom in contact with an elastically deformable wiper member. The wiper member is constituted at least in part by foam including at least 5% of open cells.

Abstract: An application device includes a stem and an application element on the stem. The application element includes a plurality of bristles. The plurality of bristles includes at least one first bristle having a counterclockwise helical profile over at least a portion of a length of the at least one first bristle and at least one second bristle having a clockwise helical profile over at least a portion of a length of the at least one second bristle. The plurality of bristles can include a plurality of first bristles having the counterclockwise helical profile and a plurality of second bristles having the clockwise helical profile. Also, the plurality of first bristles may have a plurality of different counterclockwise helical profiles, while the plurality of second bristles have a plurality of different clockwise helical profiles.

Abstract: Application member for the application of a product to the skin, including a gripping element and an application element, integral with the gripping element, the application element being flexible, and having at least a first substantially planar face, the width of which in a direction perpendicular to an axis of the gripping element decreases in the direction of a free end located opposite the gripping element, the first face being delimited by two lateral edges, at least one of which is of concave form. Further included herein is an application assembly equipped with such an application member and a method to the use of this application member for the treatment of wrinkles.

Abstract: A self cleaning dip in package is disclosed. The package includes a vial having an opening through which a user may access liquid stored within the vial. The opening is defined by an inner wall of the vial which provides access to the contents of the package. The package also includes an applicator adapted for insertion within the open end of the vial to access the liquid stored within the vial, wherein the applicator is coupled to a handle and the handle is selectively coupled to the vial for storing the liquid within the vial. The package further includes a first wiper coupled within the opening of the vial such that the applicator is wiped of excess liquid when the applicator is withdrawn from within the vial and a second wiper coupled to the handle such that the second wiper wipes the inner wall of the open end of the vial as the applicator is inserted into the vial. A process for filling the package and a venting system are also disclosed.

Abstract: A liquid cosmetic container which has a secure mechanism for defining the limit of the aperture regulation of a remover 13 is provided. In addition, the degree of aperture of the remover 13 is not influenced by the operation of putting or removing a cap 3. The liquid cosmetic container is provided with the cap 3, and an aperture-regulating ring 7 engages with an upper outer face of a container main body 19. A neck 5 which has an aperture regulating section 11 on the rear end moves in an axial direction in response to rotations of the aperture-regulating ring 7, thereby varying the diameter of a central aperture 119 of the remover 13. Furthermore a rotation-limiting piece 103 extends from a lower end of the aperture-regulating ring 7 and a rotation-limiting projection 136 is provided on an outer face of the container main body 19 which is under an engaging surface of the aperture-regulating ring 7.

Abstract: In a mascara brush comprising a multiplicity of bristles fixed between two helically twisted wire segments, with bristles or tufts of bristles with varying radial lengths extending from the wire core formed by the helically twisted wires, provision is made for the tips of tie shorter bristles to be located essentially on a nearly rotation-symmetrical, especially cylindrical, inner envelope.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A method for removing an excess amount of applique from an applicator including the steps of applying a force to a flexible structure, and pulling the applicator through the flexible structure to engage the applicator with the flexible structure. The device for removing excess applique has a flexible segment which is manually squeezable by the user to engage the flexible segment with the applicator to remove excess applique from the applicator upon passing the applicator through the flexible segment. In one embodiment, the flexible segment includes at least one projection extending from an aperture wall which engages the applicator as the applicator is pulled through the deformed aperture in the flexible segment. In a preferred embodiment, the applique is mascara and the applicator is a mascara brush.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A device for packaging and applying a substance that is in liquid, semiliquid, or powder form, in particular a cosmetic, the device comprising a receptacle that is open at one end and suitable for containing said substance, and an applicator comprising a stalk provided at one end with an applicator element and at its other and with a handle member, the applicator element being inserted into the receptacle and being withdrawn therefrom in contact with an elastically deformable wiper member. Said wiper member is constituted at least in part by foam comprising at least 5% of open cells.

Abstract: A brush-type cosmetics applicator is provided that has bristle characteristics that vary at regular intervals along the length of the applicator. A plurality of annular members (e.g., disks, sleeves, rings, beads, etc.) are each individually formed by, for example, molding. Each annular member has a central bore. At least some of the plurality of annual members are flocked, preferably on an outwardly directed surface, with fibers of a desired diameter, hardness, flexibility, length and composition (material). The remaining annular members may not be flocked, or may be flocked with fibers having one or more characteristics different from the fibers used on the first group, e.g., a different diameter, hardness, flexibility, length or composition, or a combination thereof. Alternatively, each annular member of the second group may be flocked on a surface different from the surface flocked on each annular member of the first group.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: The present invention is related to a durable foam tipped applicator that can absorb and retain fluids easily. The foam material used to make the applicator tip may be used in both water-based and solvent-based fluids. A wiper insert may be used to remove excess liquid from the applicator during removal from a reservoir of fluid. A lip at the mouth of the wiper insert can redirect excess fluid into the reservoir.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A portable and possibly rechargeable packaging unit for a product such as mascara includes an applicator and a reservoir provided with at least one wiper. The applicator has a handle and at least one tuft of bristles implanted parallel to the median plane of this handle, these bristles being of a specific shape and length and capable of applying mascara to keratinous fibers, and in particular to eyelashes. The reservoir has a length substantially equal to that of the bristles of the applicator.

Abstract: An apparatus for applying a sun tan lotion to a hard to reach area of a user's skin having an applicator rotatably supported by a shaft extending from an elongated handle traversing a user's palm, the applicator having a compressible layer of closely spaced wick-like absorbent fiber bundles extending generally outwardly from a mat supported on a hollow cylindrical base, the base including a split cylinder grip member contained in a channel along an inner surface for frictional retention of the shaft, the apparatus also including a container for immersion of the applicator in a supply of lotion having an inner surface sufficient in size to create a clearance around an immersed applicator for non-piston travel of the applicator and an opening sized for interference with the compressible layer of the applicator, the apparatus further including an exit reservoir extending from said opening having an outwardly expanding portion for containment and return of liquid separated from said applicator externall

Abstract: A cosmetic container comprises an insert which is preassembled to a brush by means of an undercut ring located beneath a brush flange and cooperating with an undercut recess in the throat of the insert. The insert walls are held by friction in the container and anchored externally to the container by a ring which extends peripherally from the threaded container wall. An undercut in the insert external flange engages the ring to complete the anchor. The insert is molded from polymer that repels the cosmetic product owing to molecular polarity. The insert functions as a sealing mechanism and a means to keep product from reaching the top of the container or on the container threads. The insert walls may also be shaped as a liquid inhibitor to retard flow from the container if the bottle is tipped over inadvertently.

Abstract: A wiper unit for a cosmetics applicator is provided with resilient fingers at an obtuse angle to the axis of its orifice, and occupying at most 50% of the orifice area.

Abstract: In a mascara unit comprising an applicator fixed to a holder and a reservoir for mascara, the applicator dipping into the reservoir in the condition of non-use and transport and being movable out of the reservoir for the application of mascara, it is provided that the applicator and the reservoir are designed as a unit so that the applicator can be moved out of and into the reservoir through actuation by one hand.

Abstract: A container for a pasty cosmetic product has a wall defining an internal chamber. At least part of the wall is flexible. The container has a neck that provides access to the internal chamber. An applicator projects into the container and is attached to a cap that closes the container about the neck. Squeezing the flexible wall portion of the container permits the user to deposit product onto the applicator that would otherwise be inaccessible, thereby avoiding waste of product adhered to the inner wall of the container. This permits access by the consumer to a larger percentage of the contained product than has typically been possible in the traditional container.

Abstract: A correction fluid bottle (1) has a neck insert (4) defining a passage through which an applicator brush can be passed, and an inner end of the insert is terminated in a steeply inclined plane to define a tapered protrusion (15) extending into the bottle for drops of fluid running back through the neck to collect at the free end of the protrusion and fall back into the bottle, thereby avoiding a build up of dried fluid at the inner end of the neck.

Abstract: A distributor for a cosmetic product, in fluid or paste form, intended for make-up, in particular to a mascara distributor, comprising on the one hand a distributor body (C) which comprises a seating (29) for an applicator member (3) and, on the other hand, a gripping element (E) which comprises a capsule (1) provided with a rod (2) bearing the applicator member (3) at one of its ends which projects from the capsule. The capsule being capable of being assembled in a removable manner on the distributor body (C) and capable of being gripped by a user in order to apply the cosmetic product. A reservoir (8) for the cosmetic product is, moreover, provided and associated with a feed device intended to introduce successive doses of the cosmetic product into the seating (29) of the applicator member (3) from the reservoir (8).

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A device for applying a substance, in particular a cosmetic such as mascara, includes a receptacle containing a supply of the substance, and an applicator having an axis, the applicator being provided on the axis at one end with a handle element and at the other end with an applicator element, the handle element and the applicator element being interconnected by a link element. The applicator element includes a twisted wire type brush whose core extends in a direction that is not parallel to the axis of the applicator, and the link element and the brush are shaped in such a manner that the bristles extending from the link element for use in applying the substance are contained in a sector of angular extent that is not greater than 180.degree. about the core.