Abstract: A method may prepare a tinted cosmetic composition, in particular a make-up composition, which is particularly versatile. Such a method may make it possible to prepare tinted cosmetic compositions that can be suitable for many types of skin tone, e.g., including preparing a continuous hydrophilic phase comprising (i) a hydrophilic compound A in a range of from 90 to 99.6 wt. % of a hydrophilic phase of the oil-in-water emulsion, and (ii) a polymer P, in a range of from 0.4 to 10 wt. % of the hydrophilic phase, the polymer P comprising, in polymerized form, an anionic monomer (a1) and a C1-C8 ester (a2); adding, under stirring, a lipophilic phase comprising a lipophilic compound B, to form a dispersion of lipophilic phase particles in the continuous hydrophilic phase; then adding, under stirring, of a pigment C. The coloration, retention, and stability properties of such compositions are particularly improved.

Abstract: Anti-UV cosmetic compositions in the form of an emulsion may include an emulsifying polymer which is prepared by polymerizing an anionic monomer and a C1-C7 ester of an unsaturated carboxylic acid. Such anti-UV cosmetic compositions may be prepared in the absence of a surfactant. The preparation and use of such anti-UV cosmetic compositions may provide anti-UV cosmetic composition having dual protection for the skin: protection against UV rays and limiting the penetration of UV filters into the skin.

Abstract: A device for treating human keratinous material, in particular with the aid of an electric current. The device includes a reservoir containing a composition, in particular cosmetic or dermatological, to be applied to the keratinous material, and an end fitting for the application of the composition contained in the reservoir, the end fitting comprising a plurality of application members and a distributor. The distributor includes at least one storage cavity for the composition and supply orifices to conduct the composition from the storage cavity or cavities to the application members, and the distributor being configured so that the flow rate of the composition arriving at the application members is identical to within 20% for at least two application members, better for each application member.

Abstract: A device for treating human keratin materials that delivers a cosmetic or dermatological composition onto the latter together with the application of an electric current, in particular an electrophoresis device, the composition applied being contained in a cartridge carried by the device, the cartridge having a body that forms a reservoir and a piston through which a drive screw passes and which can move in the body under the effect of the relative rotation of the screw and the piston, the device comprising an electric drive motor for bringing about this relative rotation of the screw and of the piston, and an electronic circuit for controlling the electric motor.

Abstract: An appliance for treating human keratin materials, includes a treatment head and a handle for holding the appliance in one hand in order to apply the head to the human keratin materials, notably the skin, the appliance having a housing for holding a refill containing a product to be applied, the handle and the treatment head forming an elbow, the housing being oriented substantially in line with the treatment head and open in an opposite direction to the treatment head, the refill being arranged so as to be actuated by the user in order to dispense a metered quantity of product.

Abstract: Device for treating human keratinous material with the aid of an electric, current. The device includes a reservoir containing a composition, in particular cosmetic or dermatological, to be applied to the keratinous material, and an end fitting for the application of the composition contained in the reservoir. The end fitting includes a plurality of application members and an electrically conducting distributor. The distributor includes at least one storage cavity for the composition and supply orifices to conduct the composition from the storage cavity or cavities to the application members.

Abstract: A device for treating human keratin materials that delivers a cosmetic or dermatological composition onto the latter together with the application of an electric current, in particular an electrophoresis device, the composition applied being contained in a cartridge carried by the device, the cartridge having a body that forms a reservoir and a piston through which a drive screw passes and which can move in the body under the effect of the relative rotation of the screw and the piston, the device comprising an electric drive motor for bringing about this relative rotation of the screw and of the piston, and an electronic circuit for controlling the electric motor.

Abstract: A device for treating human keratinous material, in particular with the aid of an electric current. The device includes a reservoir containing a composition, in particular cosmetic or dermatological, to be applied to the keratinous material, and an end fitting for the application of the composition contained in the reservoir, the end fitting comprising a plurality of application members and a distributor. The distributor includes at least one storage cavity for the composition and supply orifices to conduct the composition from the storage cavity or cavities to the application members, and the distributor being configured so that the flow rate of the composition arriving at the application members is identical to within 20% for at least two application members, better for each application member.

Abstract: The present invention relates to a method for cosmetic treatment of non-acneic oily skin, comprising the step consisting in: exposing said non-acneic oily skin to a first quasi-monochromatic light of artificial origin having a dominant wavelength peak between 300 and 700 nm, better still between 400 and 650 nm, even better still between 560 and 620 nm.

Abstract: Branched saturated dinitrile byproducts, e.g. 2-methylglutaronitrile, 2-ethylsuccinonitrile and mixtures thereof, are converted into useful ethylenic nitriles by dehydrocyanating same, in vapor phase, in the presence of an at least partially acidified cation exchange substrate, notably a molecular sieve, clay, acid oxide or lamellar phosphate.

Abstract: The invention relates to chemical compounds and their use as catalysts in the solvolysis of alkyl halides. The chemical compounds, when dry, have formula (I):(EO.sub.4 M).multidot.(Imp)p (I)wherein E is selected from the group consisting of phosphorus, arsenic, antimony and bismuth, and is preferably phosphorus, and M is a metal or a mixture of metals.Imp corresponds to a basic impregnating compound consisting of alkaline earth metal, or preferably alkali metal, and their mixtures in combination with a counter-anion to ensure electrical neutrality.The coefficient p is between 10.sup.-2 and 1/3.