Drug – bio-affecting and body treating compositions – Topical sun or radiation screening – or tanning preparations
Reexamination Certificate
2006-04-25
2006-04-25
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Topical sun or radiation screening, or tanning preparations
C424S060000, C424S400000, C424S401000, C600S407000
Reexamination Certificate
active
07033577
ABSTRACT:
An in vitro method for the prediction of in vivo UVA protection by a composition with sunscreen properties. The method includes the steps of: determining in vivo SPF; determining in vitro SPF based on the sunscreen's absorbance spectrum in the UV region; normalizing the absorbence spectrum based on integration area of UVA1; and calculating the PFA-PPD in vitro.
REFERENCES:
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Donovan Barbara
Dueva-Koganov Olga V
Romanoschi Ovidiu
Sanogueira James P.
Dodson Shelley A.
Ohlandt Greeley Ruggiero & Perle L.L.P.
Playtex Products Inc.
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