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However, a lifetime of sun, wind, housework, and outdoor activities can take its toll on exposed skin, resulting in dry, wrinkled skin and age spots that can belie a person's actual age

Since the 1930s, vitamin A deficiency has been linked to skin conditions (Greenberger 2012) and standard therapy for psoriasis includes acitretin, a vitamin A metabolite

(Source 13) Hydroxycobalamin This form of vitamin B12, sometimes also referred to as hydroxocobalamin, is a naturally occurring or nature bioidentical form

Many commercial "copper peptide" products actually contain Pal-GHK rather than GHK-Cu, but the two compounds have different physicochemical properties and may not behave identically in skin