Determination of sun protection factor (SPF) of sunscreens by ultraviolet spectrophotometry

Determination of sun protection factor (SPF) of sunscreens by ultraviolet spectrophotometry

The aim of this research was to determine the sun protection factor (SPF) of sunscreens emulsions containing chemical and physical sunscreens by ultraviolet spectrophotometry. Ten different commercially available samples of sunscreen emulsions of various manufactures were evaluated. The SPF labeled...

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Veröffentlicht in:Revista brasileira de ciências farmacêuticas 2004-09, Vol.40 (3), p.381-385
Hauptverfasser: Dutra, Elizângela Abreu, Oliveira, Daniella Almança Gonçalves da Costa, Kedor-Hackmann, Erika Rosa Maria, Santoro, Maria Inês Rocha Miritello
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container_title Revista brasileira de ciências farmacêuticas
container_volume 40
creator Dutra, Elizângela Abreu
Oliveira, Daniella Almança Gonçalves da Costa
Kedor-Hackmann, Erika Rosa Maria
Santoro, Maria Inês Rocha Miritello
description The aim of this research was to determine the sun protection factor (SPF) of sunscreens emulsions containing chemical and physical sunscreens by ultraviolet spectrophotometry. Ten different commercially available samples of sunscreen emulsions of various manufactures were evaluated. The SPF labeled values were in the range of 8 to 30. The SPF values of the 30% of the analyzed samples are in close agreement with the labeled SPF, 30% presented SPF values above the labeled amount and 40% presented SPF values under the labeled amount. The proposed spectrophotometric method is simple and rapid for the in vitro determination of SPF values of sunscreens emulsions.
doi_str_mv 10.1590/S1516-93322004000300014
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title Determination of sun protection factor (SPF) of sunscreens by ultraviolet spectrophotometry
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