Determination of sun protection factor (SPF) of sunscreens by ultraviolet spectrophotometry
RBCF, Rev. bras. ciênc. farm. (Impr.)
;
40(3): 381-385, jul.-set. 2004. tab
Artículo
en Inglés
| LILACS
| ID: lil-420686
ABSTRACT
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 por cento of the analyzed samples are in close agreement with the labeled SPF, 30 por cento presented SPF values above the labeled amount and 40 por cento 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
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Protectores Solares
/
Cosméticos
/
Emulsiones
Idioma:
Inglés
Revista:
RBCF, Rev. bras. ciênc. farm. (Impr.)
Asunto de la revista:
Bioquímica
/
Farmacia
/
Farmacología
Año:
2004
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade de São Paulo/BR
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