essential fx acyl-glutathione eyelid lift serum Perricone MD .5 fl oz New in Box This ultra Essential Fx Acyl-Glutathione Eyelid Lift

Glutathione is a naturally occurring antioxidant produced by the liver and is composed of three essential amino acids, namely glycine, cysteine, and glutamic acid

First discovered in the 1970s, GHK-Cu (Glycyl-L-Histidyl-L-Lysine Copper Complex) is a naturally occurring tripeptide that binds with copper ions

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Where tested, the combination can provide broader data on tissue repair and regeneration than either peptide alone

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Placebo effects, expectation bias, and individual variability all confound interpretation