Transepidermal <scp>UV</scp> radiation of scalp skin <i>ex vivo</i> induces hair follicle damage that is alleviated by the topical treatment with caffeine

Abstract

Our study highlights the clinical relevance of our scalp UV irradiation ex vivo assay and provides the first evidence that transepidermal UV radiation negatively affects important human HF functions. This suggests that it is a sensible prophylactic strategy to integrate agents such as caffeine that can act as HF photoprotectants into sun-protective cosmeceutical and nutraceutical formulations.