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US 8,557,227 B2Granted
Sunscreen compositions having synergistic combination of UV filters
AssigneeL'oreal
InventorsJean-Thierry Simonnet, Anil Shah, Susan Halpern
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 overall amounts of UV filtering agents, and without requiring the use of oxybenzone. Furthermore, the disclosure relates to methods of using the described compositions for protecting keratinous substances such as skin and hair from UV radiation.
Claims12
A sunscreen composition comprising a combination of UV filters consisting of:
- octocrylene, avobenzone, octisalate, and homosalate, and optionally oxybenzone in the following amounts:
- 2 to 7 wt. % octocrylene;
- 1 to 3 wt. % avobenzone;
- 0 to 1 wt. % oxybenzone;
- 1 to 5 wt. % octisalate;
- and
- 2 to 10 wt. % homosalate;
- provided that the ratio of each filter relative to avobenzone is as follows:
- the ratio of octocrylene to avobenzone is 1.6:1.0 to 2.4:1.0,
- the ratio of oxybenzone to avobenzone 0.0:1.0 to 0.016:1.0, the ratio of octisalate to avobenzone is 1.3:1.0 to 2.0:1.0, and the ratio of homosalate to avobenzone is 2.3:1.0 to 3.6:1.
7 more elements
Dependencies are inferred from the claim text.