Photoprotective UV-screening compositions comprising...

Drug – bio-affecting and body treating compositions – Topical sun or radiation screening – or tanning preparations

Reexamination Certificate

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Details

C424S060000, C424S400000, C424S401000

Reexamination Certificate

active

10463432

ABSTRACT:
Topically applicable, photostable cosmetic/dermatological UV-screening compositions suited for photoprotecting the skin and the hair, comprise (a) at least one UV-screening dibenzoylmethane compound, (b) at least one UV-screening 1,3,5-triazine compound that is photosensitive in the presence of a dibenzoylmethane compound, and (c) a 1,3,5-triazine photostabilizing amount of at least one 4,4-diarylbutadiene compound, formulated into a topically applicable, cosmetically/dermatologically acceptable support therefor; the weight ratio of the 4,4-diarylbutadiene compound(s) to the dibenzoylmethane compound(s) is characteristically greater than 2.5 and the subject compositions are advantageously devoid of any cinnamate sunscreen.

REFERENCES:
patent: 6093385 (2000-07-01), Habeck et al.
patent: 6238649 (2001-05-01), Habeck et al.
patent: 6387355 (2002-05-01), Heidenfelder et al.
patent: 6391289 (2002-05-01), Heidenfelder et al.
patent: 6436373 (2002-08-01), Habeck et al.
patent: 1 051 963 (2000-11-01), None
patent: 2 757 055 (1998-06-01), None
patent: 2 757 057 (1998-06-01), None
patent: WO 98/00099 (1998-01-01), None

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