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Lyophilized research products should be stored in a cool, dry environment prior to preparation to help maintain long-term stability and purity
Size : 1 ounce | Key ingredients : Niacinamide, Zinc Skin Type : Mature, Dry How we tested In reviewing the best niacinamide serums for 5 years, here are the following testing criteria I kept in mind for each formulation: Efficacy : Did this serum make my skin clearer
Brighter skin tone Glutathione helps reduce melanin levels in the skin
- 12% Niacinamide with double encapsulation allows slow release into deeper layers, which reduces irritation
1 fl oz
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