l glutathione skin whitening We Like Vitamins NSF Certified Supplement 500mg - 60 Capsules of Reduced L-Glutathione for Antioxidant & Immune Support Glutathione Tablets 500mg Glutofal Skin
Description
Most recipes, as expected, use ascorbic acid, because it is the most well known form of vitamin C

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Ingredients aka why this DIY face serum has anti-aging properties

For a quick summary, see this quote from one study : RESULTS: As one of the most powerful antioxidants in the skin, vitamin C has been shown to protect against photoaging, ultraviolet-induced immunosuppression, and photocarcinogenesis

I apply it on damp skin immediately after a shower

I try to add it to most of my oil-based formulations
