In vitro test method to assess the UVA protection performance of sun care products

摘要

In-vitro test method to measure the UVA protection performance (UVAPF) of sun care products by measuring the in-vitro absorbance data, normalising the spectrum to the in-vivo SPF and calculating the UVA protection performance by the following formula: WhereE(λ) = irradiance at wavelength λ of the light spectrum usedC = constant factor for the adjustment of the spectrum to the in-vivo measurementS(λ) = effectiveness of a biological UVA endpoint at wavelength λ;A(λ) = absorbance