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Lab tests show "mineral" sunscreens often contain hidden chemical UV absorbers, challenging claims of purity.
Scientific testing reveals that both mineral and chemical sunscreens primarily work by absorbing UV radiation, not reflecting it as commonly believed.
Many products labeled "mineral-only" contain undisclosed chemical UV absorbers like butyloctyl salicylate and ethylhexyl methoxycrylene, which improve texture, reduce white cast, and boost SPF.
Lab tests on multiple sunscreens found these additives in "mineral-only" formulations, challenging the idea of a clear distinction between the two types.
The findings suggest that high SPF and user-friendly application often require a blend of ingredients, raising concerns about labeling transparency and consumer misperceptions about mineral sunscreens' purity and safety.
Las pruebas de laboratorio muestran que los protectores solares "minerales" a menudo contienen químicos ocultos que absorben los rayos UV, lo que desafía las afirmaciones de pureza.