Also known as: ZnO, Mineral Sunscreen
Zinc oxide is a mineral UV filter that provides broad-spectrum UVA and UVB protection through physical reflection and absorption. It is photostable, non-irritating, and safe for sensitive skin and children. At higher concentrations it can leave a white cast, though micronised and nano-zinc formulations reduce this. Considered the gold standard mineral sunscreen ingredient.
Comedogenicity ratings are based on the rabbit ear assay model. Individual skin responses vary. See our article on comedogenicity ratings for context.
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