Oily skin preparation for external use
US8062671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2003 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Dec 16, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q1/12
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The objective of this invention is to provide an oily external composition for skin having an excellent rough skin recovering/preventing effect, and wherein powder is well dispersed in oil. An oily external composition for skin of this invention is characterized in that comprising a complex powder (the surface of lipophilic base powder is covered with zinc oxide) and an oil component, wherein said complex powder is dispersed in said oil component, and wherein zeta-potential of said lipophilic base powder is negative value at pH on skin. It is preferable that zeta-potential of said lipophilic base powder is −10 mV or less at pH on skin. It is preferable that said lipophilic base powder is swelled in the condition of dispersing in oil. Above-mentioned external composition can be used as a rough skin recovering composition and a sensitive skin caring composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.