Dictionary of Human Evolution and Biology

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Delayed Tanning

In vivo, the second of a two-stage acclimatization response resulting in browning or darkening of the living skin known as tanning, and caused by exposure to UV radiation. Delayed tanning is a durable browning beginning after 24-48 h, maximized 19 days after exposure, and caused primarily by exposure to UV-B (but UV-A and visible light are contributors); it fades in approximately 9-10 months.

Cf. immediate tanning.

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