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Safely Using L-Ascorbic Acid with Copper Peptides: Layering with Absorption Time: Apply your L-Ascorbic Acid serum first and allow it to fully absorb for 10-15 minutes before applying your copper peptide product

To our knowledge, no preclinical or clinical investigations have been conducted to determine which of the multiple commercially available nutritional supplement products demonstrate superior results in aging women with estrogen-deficient skin

You may need to take vitamin B12 for the rest of your life, especially if you have neurological symptoms

References 1 Cosmetics / MDPI (PubMed)GHK and GHK-Cu: the human copper tripeptide, its decline with age and roles in tissue remodeling