Pharmaceutical or cosmetic composition containing hydroquinone and kojic acid
US5279834A · kind A · utility
17Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1992 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | Jul 17, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/35
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a cosmetic or pharmaceutical composition, containing hydroquinone and kojic acid or a derivative thereof, especially the salts or esters thereof. The hydroquinone and/or kojic acid component is in a form which is at least partially incorporated into liposomes. The combination of these components in liposomes makes it possible to obtain a synergistic effect in their use as topical formulations, especially dermatological or cosmetic compositions, especially for their skin-lightening activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.