Rinse-off skin care compositions containing cellulosic materials
View Patent ↗The compositions and methods of this invention relate to a rinse-off skin care composition containing hydrophobic, linear cellulose particles having an average length of from about 1 to about 1000 μm, a particle aspect ratio from about 1000 to about 2 and a thickness of from about 1 to about 500 μm; at least one cleansing agent selected from the group consisting of a saponified fat and a surfactant; and a cosmetically acceptable carrier.
1. A method of removing oil from the skin of a user without irritating the skin of said user, comprising the steps of:
(a) applying a skin care composition to the surface of the skin of a user, the skin care composition comprising; (i) hydrophobic, linear cellulose particles derived from cotton having an average length of from about 1 to about 1000 μm, a thickness of from about 1 to about 500 μm, and a particle aspect ratio of from about 1000 to about 2; wherein the cellulose fibers are generated from cloth or nonwoven materials previously formed from cotton;
(ii) at least one cleansing agent selected from the group consisting of a saponified fat and a surfactant; and (iii) about 50% to about 90% water.
2. The method of claim 1 , wherein said hydrophobic, linear cellulose particles have an oil absorption capacity and retention of from about 150 to about 500% weight oil/weight particles.
3. The method of claim 2 , wherein said oil absorption capacity and retention of said hydrophobic, linear cellulose particles is from about 300 to about 500% weight oil/weight particles.
4. The method of claim 1 , wherein said particles have an average water contact angle of greater than about 100 degrees.
5. The method of claim 1 , wherein said particles have an average water contact angle of greater than about 120 degrees.
6. The method of claim 1 , wherein said surfactant is selected from the group consisting of anionic, nonionic, and amphoteric surfactants.
7. The method of claim 1 , wherein said composition comprises from about 1 to about 6 percent by weight of said hydrophobic, linear cellulose particles.
8. The method of claim 1 , wherein the aspect ratio of the hydrophobic, linear particle from about 200 to about 5.
9. The method of claim 1 , wherein the length of the linear, hydrophobic particles is from about 10 to about 500 microns and the width of the hydrophobic linear particles is from about 5 to about 25 microns.
10. A method of removing oil from the skin of a user while increasing hydration of the skin, comprising the steps of:
(a) applying a skin care composition to the surface of the skin of a user, the skin care composition comprising; (i) hydrophobic, linear cellulose particles derived from cotton having an average length of from about 1 to about 1000 μm, a thickness of from about 1 to about 500 μm, and a particle aspect ratio of from about 1000 to about 2 wherein the cellulose fibers are generated from cloth or nonwoven materials previously formed from cotton; (ii) at least one cleansing agent selected from the group consisting of a saponified fat and a surfactant; and (iii) about 50% to about 90% water.
11. The method of claim 10 , wherein said hydrophobic, linear cellulose particles have an oil absorption capacity and retention of from about 150 to about 500% weight oil/weight particles.
12. The method of claim 11 , wherein said oil absorption capacity and retention of said hydrophobic, linear cellulose particles is from about 300 to about 500% weight oil/weight particles.
13. The method of claim 10 , wherein said particles have an average water contact angle of greater than about 100 degrees.
14. The method of claim 10 , wherein said particles have an average water contact angle of greater than about 120 degrees.
15. The method of claim 10 , wherein said surfactant is selected from the group consisting of anionic, nonionic, and amphoteric surfactants.
16. The method of claim 10 , wherein said composition comprises from about 1 to about 6 percent by weight of said hydrophobic, linear cellulose particles.
17. The method of claim 10 , wherein the aspect ratio of the hydrophobic, linear particle from about 200 to about 5.
18. The method of claim 10 , wherein the length of the linear, hydrophobic particles is from about 10 to about 500 microns and the width of the hydrophobic linear particles is from about 5 to about 25 microns.