Note before doing this that antihistamines (with one exception) inhibit tanning. I presume this includes H2 blockers such as zantac/ranitidine "histamine induc

Note before doing this that antihistamines (with one exception) inhibit tanning. I presume this includes H2 blockers such as zantac/ranitidine "histamine induces melanogenesis of human cultured melanocytes by protein kinase A activation via H2 receptors." http://www.sciencedirect.com/science/article/pii/S0022202X15407730 http://www.sciencedirect.com/science/article/pii/S0022202X15... Another reason sunlight+tan might be helpful, is that your tan deals fights heavy metal toxicity: Recent research suggests that melanin may serve a protective role other than photoprotection.[36] Melanin is able to effectively ligate metal ions through its carboxylate and phenolic hydroxyl groups, in many cases much more efficiently than the powerful chelating ligand ethylenediaminetetraacetate (EDTA). Thus, it may serve to sequester potentially toxic metal ions, protecting the rest of the cell. https://en.wikipedia.org/wiki/Melanin https://en.wikipedia.org/wiki/Melanin