Patent Picks—Sunscreen Particles, Delaying Senescence, Skin Repair and More

By: Rachel L. Grabenhofer

Posted: March 15, 2011

Chosen biweekly by Rachel Grabenhofer, editor of Cosmetics & Toiletries magazine, for their relevance to personal care, Patent Picks are taken from publicly available sources. This edition features patents related to sun protection materials, skin repair and sun care formulation technologies.

Polysiloxane sunscreens
US Patent 7906108
Publication date: March 15, 2011
Assignee: DSM IP Assets B.V.

The present invention relates to novel sunscreens based on polysiloxanes and to their preparation and use, especially in formulations for protection against harmful effects of sunlight.

Phosphate ester surfactants to increase SPF
US Patent Application 20110052516
Publication date: March 3, 2011
Inventor: Christine Mendrok-Edinger

This technology relates to the use of phosphate ester surfactants for increasing the sun protection factors of topical compositions that comprise at least on UV filter. Furthermore, the invention relates to topical compositions comprising a phosphate ester surfactant and at least 4.0% w/w of butyl methoxydibenzoylmethane in combination with additional UV filter substances.