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US 9,539,194 B1Granted
Sunscreen compositions having synergistic combination of UV filters
AssigneeL'oreal
InventorsSusan Halpern Chirch, Anthony Diaz-Santana, Anil Shah
Life of this patent
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Abstract
The disclosure relates to sunscreen compositions having a synergistic combination of ultraviolet light (UV) filtering agents that provide a high sun protection factor (SPF). Compositions according to the disclosure have high SPF values without requiring high total amounts of UV filtering agents. Furthermore, the disclosure relates to methods of using the described compositions for protecting keratinous substances such as skin and hair from UV radiation.
Claims22
A sunscreen composition comprising a combination of the following UV filters:
- butyl methoxydibenzoylmethane, ethylhexyl triazone, drometrizole trisiloxane, homosalate, ethylhexyl salicylate, octocrylene, and terephthalylidene dicamphor sulfonic acid, wherein the ratio of each UV filter relative to butyl methoxydibenzoylmethane is as follows:
- the ratio of ethylhexyl triazone to butyl methoxydibenzoylmethane is 0.5:1.0 to 0.8:1.0;
- the ratio of drometrizole trisiloxane to butyl methoxydibenzoylmethane is 0:1.0 to 0.5:1.0;
- The ratio of homosalate to butyl methoxydibenzoylmethane is 0.4:1.0 to 0.7:1.0;
- the ratio of ethylhexyl salicylate to butyl methoxydibenzoylmethane is 0.5:1.0 to 0.8:1.0;
- the ratio of octocrylene to butyl methoxydibenzoylmethane is 1.0:1.0 to 1.5:1.0;
- and
- the ratio of terephthalylidene dicamphor sulfonic acid to butyl methoxydibenzoylmethane is 0:1.0 to 0.1:1.0.
5 more elements
Dependencies are inferred from the claim text.