Physical properties of organic particulate UV absorbers used in sunscreens II. UV-attenuating efficiency as function of particle size.


In this study the UV-attenuating properties of microparticles consisting of a benzotriazole derivative were investigated, which are used as absorbers for UV radiation in cosmetic sunscreens. The particles were micronized in presence of a dispersing agent by means of a ball milling process. According to the energy input different particle sizes were produced… (More)


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