It is said that having water or oil on the skin increases tan. Is it true? If so, is it due to magnifying glass properties of the water and oil droplets (but that might not be the only mechanism, as covering one's skin with oil does not produce droplets), or to the sensation of heat that is different and might allow longer sun exposure?
closed as primarily opinion-based by Bez, Devashish Das, WYSIWYG, Chris, Armatus Aug 20 at 12:06
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