It is entitled “Cosmetics — Sun protection test methods — In vitro determination of sun protection factor (SPF)”.
This method is based on UV transmittance spectroscopy, from which spectrophotometric measurement of UV transmission through suitable UV-transparent substrates allows SPF values to be predicted. alive.
It is applicable to sun protection products in the form of emulsion or single-phase alcoholic formulation, but not to those in the form of loose or compact powder or stick.
It is reserved for the determination of a static sun protection factor, and is not applicable to the determination of water resistance properties of a sun protection product.
It is available for purchase at a price of 177 CHF (Swiss francs).
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