Over several weeks, the range expands and confidence builds
1% GHK-CU Copper Tripeptide Serum w/ Hyaluronic Acid | Niacinamide Purified Water (Aqua), Hyaluronic Acid, Saccharomyces-Copper Ferment, Niacinamide, Copper Peptide GHK-Cu, Palmitoyl Tripeptide-5 (Syn Coll), Palmitoyl Tripeptide-38 (Matrixyl Synthe 6), Gluconolactone (Natural Preservative), Glycerine has been tested and proven to improve many skin conditions resulting from aging skin - Proven to reduce wrinkle depth, tighten and lift skin, rebuild collagen loss and plump skin
In fact, Supplementary Table 2 reveals relatively low-fold increases in values
84 GuoK.LuJ.HuangY.WuM.ZhangL.YuH.et al (2015)
It is also studied in nociceptive-signaling and opioid-withdrawal neuroadaptation models