Cosmetic composition for skin comprising urea
US6355259B1 · kind B1 · utility
9Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1998 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Dec 14, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/52
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A cosmetic composition for skin use which comprises urea and a buffer comprising disodium hydrogenphosphate and citric acid or a buffer comprising potassium dihydrogenphosphate and disodium hydrogenphosphate, or both, and a cosmetic composition further comprising allantoin. Notwithstanding inclusion of urea which is useful for preventing rough dry skin and maintaining moisturization, the cosmetic composition does not have problems such as an increase in pH and an odor from ammonia produced by urea during storage for a long period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.