The Labsphere® is a spectrophotometer especially created for sunscreen evaluation.
It allows to perform in vitro UVA-PF measurement, and it provides in vitro SPF value, UVA-PF value, and critical wavelength according to ISO 24443:2021. These measurements provides additional information about the formula such as the absorbance according to wavelength, the photostability of the filters and the SPF/UVA-PF ratio, and is timesaving and cost saving for the development of your formula before starting in vivo testing. ISO 24443:2021 is mandatory to market sunscreens with “broad spectrum protection” claim in the EU.
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