Cosmetic composition
US5415855A · kind A · utility
9Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1993 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Jun 22, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/05
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Modified ceramides are defined, together with their synthesis and compositions comprising them for topical application to human skin, hair and nails. The modified pseudoceramides have a structure: ##STR1## and an approximate summary is that R and R.sup.1 are aliphatic hydrocarbon, A is CH.sub.2, CHOR.sup.2, CH.dbd.CH or CHOY, and at least one of R.sup.2, R.sup.3 and R.sup.4 is sulphate, phosphate or similar. The presence of phosphate or sulphate facilitates skin absorption, after which the phosphate or sulphate is removed by enzymes present in vivo.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.