Cosmetic/dermatological w/o emulsions highly concentrated in hydroxy acids
US5863544A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1995 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Dec 14, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Topically applicable cosmetic/dermatological compositions well suited for the therapeutic treatment or care of human skin, nails, hair and/or of the scalp, in particular for treating and/or preventing xerosis, ichthyosis, actinic keratosis and/or photoinduced cutaneous aging, comprise a water-in-oil emulsion containing (a) at least 10% by weight of at least one hydroxy acid, (b) an effective emulsifying amount of at least one polyoxyalkylenated silicone, and (c) an effective coemulsifying amount of at least one polyol alkyl ester, polyol alkyl ether or oxyalkylenated alkyl ether, with the proviso that the subject compositions are devoid of any C.sub.1 -C.sub.4 alkanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.