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Yet, published research relied upon by safety regulators suggests there are no significant adverse health effects from nanoparticle sunscreen preparations (such as those containing nanoparticulate zinc oxide (ZnO) and titanium dioxide (TiO2)) despite free radical formation in the presence of light.
To our knowledge this is the first study focused to the determination of metallic oxides in commercial sunscreen products.
The study shows that zinc permeates intact human skin from topically applied zinc oxide in vivo.
The methodologies allow a precise and accurate determination of metallic oxides in UV sunscreen creams, where the sample treatment is less time-consuming than in the classic methods.