The whitening process starts inside the skin (dermal layer) going outside (epidermal layer), thats the reason why it takes time to be able to see initial change in your skin tone
They are not screening for experimental tissue-repair compounds
A deficiency can occur for several reasons, such as pernicious anemia (a condition where the body cannot absorb vitamin B12 from the diet), certain medical conditions (e.g., Crohn's disease, celiac disease), surgical removal of part of the stomach or intestine, or strict vegetarian/vegan diets if not adequately supplemented
The peptide consists of three amino acids: glycine, histidine, and lysine, bound to a copper ion
bioRxiv2026 Apr 16
10.1007/s11886-019-1107-y 46 GongB.YaoZ.ZhouC.WangW.SunL.HanJ