GHK (endogenous glycyl-L-histidyl-L-lysine) GHK-Cu (Copper Peptide) References: 1
Research in humans is a bit less impressive Clinical trials in humans A 1981 double-blind study found that chronic insomniac patients found that subjects slept 59% more, shorter sleep latency, and higher sleep efficiency (Schneider 1981) A 1987 double-blind study did not find any statistically significant changes in sleep structure as measured by REM sleep, NREM sleep, or total sleep time (Debellis 1987) A 1992 double-blind study in 14 chronic insomnia patients found higher sleep efficiency and subjectively estimated tiredness decreased to similar levels of healthy subjects in 7 nights of injections (Schneider 1992) There are some limitations to these studies however
ma:nyo Bifida Biome Complex Serum 68% match with the ingredients and function of MediCube Age-R Glutathione Glow Serum Dupe Explained These products are both cruelty-free serums that contain hyaluronic acid, niacinamide and peptides
There are also several types of hyperpigmentation, such as melasma, post-inflammatory hyperpigmentation, and age spots
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