Multi-portion antiperspirant composition
View Patent ↗Disclosed is a non-flowable anhydrous topical antiperspirant composition comprising a first portion and a second portion contiguous with the first portion. The first portion is semi-opaque to opaque and comprises a first hydrophobic carrier vehicle and a first gellant and has a particulate antiperspirant active suspended therein. The second portion is translucent to transparent and comprises a second hydrophobic carrier vehicle and a second gellant. Preferably, the second hydrophobic carrier vehicle has an average refractive index that approximately matches the refractive index of the second gellant. Ideally, for greater translucency the second portion will be substantially free of antiperspirant salt and/or other opacifying materials. Preferably, the first hydrophobic carrier vehicle also has an average refractive index that approximately matches the refractive index of the first gellant. Even more preferably, the second hydrophobic carrier vehicle and second gellant are comprised of substantially the same materials in substantially the same proportions as the first hydrophobic carrier vehicle and first gellant.
1. A non-flowable anhydrous topical antiperspirant composition comprising a first portion and a second portion contiguous with the first portion, the first portion being semi-opaque to opaque and comprising a first hydrophobic carrier vehicle and a first gellant and having a particulate antiperspirant active suspended therein, and the second portion being translucent to transparent and comprising a second hydrophobic carrier vehicle and a second gellant, wherein the second portion is substantially free of antiperspirant active and other opacifying material, and wherein the second hydrophobic carrier vehicle has an average refractive index that approximately matches the refractive index of the second gellant.
2. The composition of claim 1 wherein the first portion has a % opacity of 61% to 100% and the second portion has a % opacity of 0% to 60%.
3. The composition of claim 2 wherein the second portion has a % opacity of 0% to 50%.
4. The composition of claim 1 wherein the first hydrophobic carrier vehicle has an average refractive index that approximately matches the refractive index of the first gellant.
5. The composition of claim 1 wherein the second hydrophobic carrier vehicle has an average refractive index that matches the refractive index of the second gellant to about 0.05 or better.
6. The composition of claim 1 wherein the second hydrophobic carrier vehicle has an average refractive index that matches the refractive index of the second gellant to about 0.03 or better.
7. The composition of claim 1 wherein the second hydrophobic carrier vehicle and the second gellant are comprised of substantially the same materials in substantially the same proportions as the first hydrophobic carrier vehicle and the first gellant.
8. The composition of claim 1 wherein the second hydrophobic carrier vehicle has an average refractive index of about 1.450 to about 1.500.
9. The composition of claim 8 wherein the first hydrophobic carrier vehicle has an average refractive index of about 1.450 to about 1.500.
10. The composition of claim 1 wherein the first gellant and the second gellant each comprise 12-hydroxystearic acid or n-lauroyl-glutamic acid di-n-butylamide or a mixture thereof.
11. The composition of claim 9 wherein the first gellant and the second gellant each comprise 12-hydroxystearic acid or n-lauroyl-glutamic acid di-n-butylamide or a mixture thereof.
12. The composition of claim 1 wherein the first gellant and the second gellant each comprise polyethylene homopolymer.
13. The composition of claim 1 wherein the first portion comprises 15% to 85%, by volume, of the composition and the second portion comprises 15% to 85%, by volume, of the composition.
14. The composition of claim 1 wherein the first portion comprises 50% to 80%, by volume, of the composition and the second portion comprises 20% to 50%, by volume, of the composition.
15. The composition of claim 1 wherein the composition has an application surface and the second portion forms a geometric shape at the application surface, which geometric shape is bordered on at least one side by the first portion.
16. The composition of claim 1 wherein the composition has an application surface and the second portion forms a geometric shape at the application surface, which geometric shape is bordered on at least two sides by the first portion.
17. The composition of claim 16 wherein the second portion is in the form of a substantially rectangular stripe at the application surface.
18. The composition of claim 17 wherein the stripe extends at least partially downward from the application surface.
19. The composition of claim 15 wherein the second portion is surrounded by the first portion at the application surface.
20. The composition of claim 16 wherein the second portion comprises a plurality of swirled portions interspersed throughout the first portion to provide a marbled appearance.
21. A method of reducing perspiration from human skin comprising applying to human skin a topical antiperspirant composition according to any one of claims 1 to 20 .