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Kojic acid works to inhibit pigment production, fading dark spots and sun damage, while Niacinamide refines the appearance of pores and calms redness

The preservative should be effective at your formulation pH and should not interact negatively with the peptide

GH-induced increases in IGF-1 are associated with increased muscle protein synthesis and satellite cell activation (Baar, Journal of Applied Physiology )

(The hormone estrogen is responsible for stimulating the production of collagen, elastin, HA, and ceramides.) But studies suggest that collagen and elastin begin to slowly decline as early as your mid-20s, so its never too early to be proactive about using collagen-boosting ingredients like peptides in your skin care routine