Abstract: A material (14) such as an antiperspirant contained in a shear-sensitive, free-flowing, powdery, suspension of aqueous droplets stabilized by a barrier of very fine, hydrophobic metal oxide is dispensed from a roll-on applicator. As the ball (18) is rotated, an adherent film (22) of the suspension passes through the annular outlet (20) and is subjected to shear forces. The suspension coalesces into a film (24) of cream or lotion. The suspension exhibits excellent flowability through the outlet (20) without any binding or fouling and the lotion or cream film has good adhesion to the ball. Application results in a dry feeling on the skin of the subject, a short dry-out time and excellent antiperspirant efficacy.

Abstract: The invention is directed to a topical product dispenser containing an element with a dispensible ingredient, such as a deodorant and/or antiperspirant. Prior dispensers use a screw feed with a number of parts, and the element is usually shaped with a flat surface. The improved dispenser uses fewer parts and provides an element shaped for use in an armpit. The dispenser includes a hollow, shallow circular first cylinder (16) forming a cavity for receiving a rotatable dispensible element (34) and a detachable lid for exposing the surface of the element. The solid element in the form of a second cylinder (34) is rotatably disposed in the first cylinder (16). A manually rotatable member (22) disposed in an opening in an end surface of the first cylinder (16) has an extension which penetrates and engages the second cylinder (34). The extension can contain prongs engaging opposed holes in the body of the first cylinder (16) for selective rotation of the second cylinder (34).

Abstract: A water-in-air emulsion or suspension containing a dispensible material is formed by stabilization of small droplets of aqueous liquid with an interfacial barrier of very fine, hydrophobic metal oxide particles such as silane modified silica. As the droplets are subjected to shear such as during passage through an orifice, and/or rubbing on the surface of the target, the shear forces experienced at least partially destabilize the barrier allowing the droplets to coalsesce to form particles of controlled density and increased size and eventually can be totally destabilized into an elegant cream or lotion. At least 10% of the droplets may coalesce into particles after leaving the orifice. Active ingredients, such as antiperspirants may be added to either the aqueous liquid phase or to the powder phase as long as they do not destabilize the suspension.

Abstract: A water-in-air emulsion or suspension containing a dispensible material is formed by stabilization of small droplets of aqueous liquid with an interfacial barrier of very fine, hydrophobic metal oxide particles such as silane modified silica. As the droplets are subjected to shear such as during passage through an orifice, the shear forces experienced partially destabilize the barrier allowing the droplets to coalesce to form particles of controlled density and increased size. At least 10% of the droplets coalesce into particles after leaving the orifice. Active ingredients such as antiperspirants may be added to either the aqueous liquid phase or to the powder phase as long as they do not destabilize the suspension.