Drug – bio-affecting and body treating compositions – Topical sun or radiation screening – or tanning preparations
Patent
1997-08-06
2000-02-08
Dodson, Shelley A.
Drug, bio-affecting and body treating compositions
Topical sun or radiation screening, or tanning preparations
424 60, 424400, 424401, A61K 742, A61K 700
Patent
active
060225297
ABSTRACT:
The disclosure provides sunscreen compositions comprising a carrier for topical administration and photoresponsive first sunscreen agents which are capable of undergoing intramolecular photorearrangements to form second sunscreen agents. The second sunscreen agents absorb more ultraviolet radiation than the first sunscreen agents. The sunscreen composition may comprise the prephotorearrangement first sunscreen agent, the photorearranged second sunscreen agent, a combination of the first and second sunscreen agents, or any of the above in combination with a known sunscreen agent.
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Rock Ronald S.
Stowell Michael H. B.
California Institute of Technology
Dodson Shelley A.
Trecartin Richard F.
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