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Carotenoids Halt Hyperpigmentation in Sun-exposed Skin

Contact Author Rachel Grabenhofer
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Researchers from Amway R&D and Leibniz Research Institute for Environmental Medicine (IUF) have published a study indicating carotenoid supplements not only protect skin against UVB-induced erythema, as previously known, but also UVA-induced hyperpigmentation.

The study, published in Photodermatology, Photoimmunology and Photmedicine, was performed for 12 weeks in 60 subjects having Fitzpatrick skin types II-IV, and in a double-blind, placebo-controlled manner. MED, UVA-induced minimal persistent pigmentation dose (MPPD) and skin carotenoid levels were measured initially and at 4, 8 and 12 weeks.

According to the article abstract, daily supplementation with carotenoids significantly increased skin carotenoid levels, the UVB-induced MED and UVA-induced MMPD. The authors acknowledged the benefits of supplementing sunscreens with ingestible carotenoids.

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