Cosmetic or dermatological composition with controlled release of active principle containing a photoconvertible carotenoid
US5712311A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a cosmetic or dermatological composition with controlled release of active principle containing at least photoconvertible carotenoid, capable of being converted to retinol and retinoic acid or its isomers, of following formula (I): ##STR1## in which the R.sub.1 and R.sub.2 substituents denote one of the following groups: ##STR2## at least one of the R.sub.1 and R.sub.2 substituents denoting a .beta.-ionone group of formula (II), the R.sub.3 and R.sub.4 substituents denoting hydrogen, a hydroxyl, carboxyl or C.sub.1 -C.sub.4 alkoxy group or forming, with the carbon atom of the ring, a carbonyl group, in a cosmetically or dermatologically acceptable medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.