Sunscreens' photochemical behaviour : in vivo evaluation by the stripping method

This study shows the influence of a water-in-oil emulsion and an oil-in-water emulsion on the photochemical behaviour of four sunscreen preparations containing various amounts of three UV filters: octyl methoxycinnamate, butyl methoxydibenzoylmethane, and 4-methylbenzylidene camphor. With the stripp...

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Bibliographic Details
Published in:International journal of cosmetic science 1997-04, Vol.19 (2), p.87-101
Main Authors: MARGINEAN LAZAR, G, FRUCTUS, A. E, BAILLET, A, BOCQUET, J. L, THOMAS, P, MARTY, J. P
Format: Article
Language:English
Subjects:
Applied sciences
Chemical industry and chemicals
Cosmetics, toiletries
Exact sciences and technology
Washing products. Cosmetics and toiletries. Perfumes
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Summary:This study shows the influence of a water-in-oil emulsion and an oil-in-water emulsion on the photochemical behaviour of four sunscreen preparations containing various amounts of three UV filters: octyl methoxycinnamate, butyl methoxydibenzoylmethane, and 4-methylbenzylidene camphor. With the stripping method in vivo, skin-product interactions were evaluated after topical application and ultra-violet exposure. Evaluations were also made under the same operating conditions as in determining sun protection factor in vivo. Results showed that each sunscreen preparation has a particular photochemical behaviour related to filter mixture and emulsion type. When developing a sunscreen preparation the choice of the emulsion type and filters is relevant for achieving optimum efficacy and spectral stability.
ISSN:0142-5463
1468-2494
DOI:10.1046/j.1467-2494.1997.171703.x