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Cake day: September 24th, 2025

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  • There are two different mechanisms involved in the production of a tan by UV exposure. Firstly, UVA radiation creates oxidative stress, which in turn oxidizes existing melanin, leading to the rapid darkening of the melanin. UVA may also cause melanin to be redistributed (released from melanocytes where it is already stored), but its total quantity is unchanged. Skin darkening from UVA exposure does not lead to significantly increased production of melanin or protection against sunburn.[9] In the second process […]