Sunscreen composition containing high levels of liposoluble UV filters
US9655825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2015 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Jun 19, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/884
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A water-releasing sunscreen composition in the form of an emulsion and process for using the composition are provided. The composition includes an aqueous phase containing at least one stability boosting polyol. The composition further includes an oil phase containing a first emulsifier and a structuring agent. The oil phase also includes a combined organic UV filter comprising a liquid organic liposoluble UV filter and a solid organic liposoluble UV filter. The combined organic UV filter is at a concentration from about 10% to about 25%. The composition includes a phase ratio of the aqueous phase to the oil phase of about 1.0 to about 10.0. The sunscreen composition is stable, has a sun protection factor (SPF) of greater than or equal to 15 and exhibits a critical wavelength of greater than 370 nm, and converts from an emulsion to a plurality of droplets upon application of shear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.