Time course of ultraviolet‐induced skin reactions evaluated by two different reflectance spectrophotometers: DermaSpectrophotometer® and Minolta spectrophotometer CM‐2002®

Backgrounds: Many attempts have been made to quantify ultraviolet (UV)‐induced erythema and pigmentation, but most studies have been focused on the initial changes of reaction for a few hours or days and neglected the later events.

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