Most functional ingredients today actually increase photosensitivity
Do most popular skincare functional ingredients possibly increase aging? As I understand, Vitamin C, n-acetyl Glucosamine, niacinamide etcetera lighten your skin by decreasing melanin content in your skin. Melanin is the natural protection mechanism of your skin to prevent UV damage. I can’t find any research on this topic! To me it doesn’t seem recommendable to say the amount is probably negligible.
Those ingredients have been shown to have some short-term positive effects, and could be used for aesthetic reasons. But isn’t it plausible there are negative effects long term, because pigmentation is decreased? https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2671032/
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