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A laboratory studying four peptides individually has to source four vials, reconstitute each one separately, and account for four sets of preparation variables
In fact, many people find that niacinamide helps soften the dryness or irritation that can come with stronger actives such as retinol or AHAs. It works well layered under sunscreen, too, so using a niacinamide serum isnt an excuse to skip sun protection
Hydration rarely comes up until something goes wrong
Thus, these post marketing data may be useful to complement findings from other study designs, but cannot be safely interpreted in isolation
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