Pharmaceutical composition for topical application in the auditory canal
A composition for topical application in the auditory canal is provided. The composition includes 5% to 40% by weight on the total weight of the composition of an ester of vitamin E with a carboxylic acid of formula R—COOH, in which R is an alkyl radical having from 1 to 19 carbon atoms, or an alkenyl or alkynyl radical having from 2 to 19 carbon atoms, and an oily vehicle selected from the group of hydrogenated polyisobutene, hydrogenated polydecene and mixtures of hydrogenated polyisobutene and/or hydrogenated polydecene with hydrogenated polyolefins, in particular hydrogenated C 6 -C 14 hydrogenated polyolefins, Caprylic/Capric Triglyceride, Cyclopentasiloxane, and mixtures thereof. The composition can be used to remove earwax from the auditory canal as well as to normalize the epithelium of the auditory canal in cases of friction stress in individuals wearing hearing aids or in individuals using earplugs as hearing protection.
1. A method for cleaning an auditory canal of a subject, comprising applying to the auditory canal a composition comprising a) 5% to 40%, by weight of the total weight of the composition, of an ester of vitamin E with a carboxylic acid of formula R—COOH, in which R is an alkyl radical having 1 to 19 carbon atoms, or an alkenyl or alkynyl radical having 2 to 19 carbon atoms, and b) an oily vehicle selected from the group consisting of hydrogenated polyisobutene, hydrogenated polydecene, mixtures of hydrogenated polyisobutene and hydrogenated polydecene with hydrogenated polyolefins, Caprylic/Capric Triglyceride, Cyclopentasiloxane, and mixtures thereof.
2. The method according to claim 1 , wherein the cleaning of the auditory canal consists of the removal of earwax from the auditory canal of said subject.
3. The method according to claim 2 , wherein said ester of vitamin E is vitamin E acetate, n-propionate or linoleate.
4. The method according to claim 2 , wherein said composition comprises 10% to 30%, by weight of said ester of vitamin E based on the total weight of the composition.
5. The method according to claim 2 , wherein said oily vehicle consists of hydrogenated polydecene.
6. The method according to claim 5 , wherein said ester of vitamin E is alpha-tocopheryl acetate.
7. The method according to claim 6 , wherein said composition consists of alpha-tocopheryl acetate and hydrogenated polydecene.
8. The method according to claim 7 , wherein said composition consists of 10-30% alpha-tocopheryl acetate and 70-90% hydrogenated polydecene.
9. The method according to claim 2 , wherein said oily vehicle consists of caprylic/capric glyceride (Caprylic/Capric Triglyceride).
10. The method according to claim 9 , wherein said ester of vitamin E is alpha-tocopheryl acetate.
11. The method according to claim 10 , wherein said composition consists of alpha-tocopheryl acetate and caprylic/capric glyceride (Caprylic/Capric Triglyceride).
12. The method according to claim 11 , wherein said composition consists of 10-30% alpha-tocopheryl acetate and 70-90% caprylic/capric glyceride (Caprylic/Capric Triglyceride).
13. The method of claim 1 , wherein the hydrogenated polyolefin is a C 6 -C 14 hydrogenated polyolefin.
14. The method of claim 2 , wherein the ester of vitamin E is alpha-tocopheryl acetate.