Natural sunlight photostable composition
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United States of America Patent
Stats
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Oct 23, 2007
Grant Date -
Feb 3, 2005
app pub date -
Jul 8, 2004
filing date -
Jul 11, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to photostable compositions that provide protection from ultraviolet radiation ('UVR'). The invention particularly relates to the sunscreens avobenzone, octocrylene and oxybenzone, forming a triplet sunscreen combination. Compositions of the present invention are generally substantially free of substantial amounts of other sunscreens. The triplet combination surprisingly provides and substantially maintains the initial SPF value of the sunscreen composition throughout the period of UVR exposure. Compositions of the invention are photostable such that each of sunscreen active in the triplet combination does not appreciably photodegrade. The present invention accurately communicates the amount of UVR photoprotection actually provided in natural sunlight and minimizes the amount of potential harmful free radicals formed as byproducts of photodegradation.
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Cited Art Landscape
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