These enzymes are also identified as glycine hydroxymethyltransferase (was also identified as threonine aldolase)
DAILY BEAUTY & WELLNESS SUPPORT: Healthy-looking skin starts with good nutrition
Int Psychogeriatr
Preclinical research indicates GHK-Cu has the capacity to modulate the expression of over 4,000 human genes, according to bioinformatics analyses conducted by Pickart and colleagues, with a substantial subset of these genes tied directly to extracellular matrix maintenance, collagen production, and tissue-repair signaling

Applying vitamin C to your skin may reduce hyperpigmentation by interfering with an enzyme called tyrosinase, which is responsible for the production of melanin, a natural skin pigment ( Moreover, vitamin C acts as a brightening agent and can reduce the appearance of darkened spots without changing the natural color of your skin ( Some human studies that combine topical vitamin C with iontophoresis an electrical gradient applied to the skin found significant reductions in hyperpigmentation ( Though this method is promising, iontophoresis increases vitamin C absorption into your skin, meaning that topical application of vitamin C alone may not yield the same results ( Furthermore, most related studies use vitamin C in combination with other anti-hyperpigmentation ingredients like alpha-hydroxy acids, making it hard to determine the specific effects of the vitamin