Volume 14, Number 2, Mars-Avril 2007
|Page(s)||81 - 83|
|Section||Nutrition et Santé|
|Published online||15 March 2007|
Influence de certains corps gras sur le Sun Protection Factor (SPF) mesuré in vitro
Laboratoire de pharmacie industrielle et cosmétologie – EA 2160 (SMAB), 1 rue Gaston Veil
Nantes Cedex 01
In order to improve the knowledge on the influence of vehicle on the SPF (Sun Protection Factor), we determined in vitro the SPF from an oil-in-water (O/W) emulsion containing octylmethoxycinnamate (4%). We changed the oily phase composition. The in vitro determination of SPF is based on the physical determination of the reduction of the energy in the UV range, through a film of product which has previously been spread on an adequate substrate. About 30 mg were applied on roughened PMMA plates and the transmission measurements are carried out using a spectrophotometer equipped with integrating sphere. Eighteen oily ingredients were studied. Each one of them was incorporated in the amount of 20%. It is the lanolin which appears most effective SPF booster. Then oils come blackcurrant, argan, sweet almond, sesame, groundnut, carthame and palmotene.
Key words: SPF in vitro / oily ingredients / emulsion O/W
© John Libbey Eurotext 2007
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