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Retinyl Palmitate/RetinolUpdated a month ago

(Additional Names: Retinoid, Retinoic Acid)

Are forms of vitamin A. While it might be a good ingredient to have in your night cream, it is not recommended to use during the day when exposed to the sun. Animal studies have shown that retinyl palmitate speeds up the photo-carcinogenic effects of the sun and the development of skin tumors and lesions. 


Sources:
https://www.ewg.org/research/what-scientists-say-about-vitamin-sunscreen#.WsPl_GaZPOR
https://ntp.niehs.nih.gov/ntp/htdocs/lt_rpts/tr568_508.pdf
https://www.ncbi.nlm.nih.gov/pubmed/16107546

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