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Kojic acid is typically used in lower concentrations of 1%2%

Serine can be converted to glycine by serine hydroxymethyltransferase [106], being important for different metabolic pathways, such as sphingolipids, nucleotide, and glutathione (antioxidant intracellular responses) biosynthesis and folate cycle (one-carbon metabolism) [106,107,108]

Best for: Increasing collagen Minimizing pore appearance Brightening and refining tone Immediate glow All skin types IPL Photofacial IPL uses intense pulsed light to target pigmentation, redness, and sun damage, revealing a more even, radiant complexion

KPV, derived from alpha-melanocyte-stimulating hormone, has been studied for its anti-inflammatory properties in skin and gut conditions