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The honest answer is that neither ingredient universally wins
Ranard, K.M., Kuchan, M.J., Erdman, J.W., Jr., 2019
Yes, by boosting collagen and improving skin elasticity, GHK-Cu helps reduce the appearance of fine lines and wrinkles, resulting in smoother, firmer skin over time
Shaking creates foam and denatures the peptide
Taking a Whole-Body Approach to Your Health Supplements like NAC can be useful, but they should be part of a broader health approach
The thin skin under my eyes has firmed up, so dark circles are less visible, fine lines on my temples have diminished, and there's not a speck of dryness
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