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One of the best ways to protect and maintain healthy skin is by both dietary consumption and external or topical application of astaxanthin (AstaPure) to the skin

Another cause could be due to certain medications that impair the DAO enzyme

Key publications: 'Stimulation of collagen synthesis in fibroblast cultures by GHK-Cu' (1988, FEBS Letters), 'In vivo stimulation of connective tissue accumulation by GHK-Cu' (1993), 'GHK-Cu stimulates matrix metalloproteinase-2 expression' (2000)

If preparing aliquots for distribution within a research team or for sequential experiments, consider aliquoting into single-use sterile vials at reconstitution to minimize repeated access to any single vial

The 'bacteriostatic' part is crucial

Petersen, J., Ingemann Johansen, V