Collagen for Skin: What the Research Actually Says About Supplements After 35
The science behind collagen supplements for skin — which types work, how much you need, and what’s still unknown.
Collagen
GHK-Cu: The skin peptide that actually works
A naturally occurring copper peptide that declines with age, GHK-Cu stimulates collagen, elastin, and wound healing. The science is real, but the hype has outrun it.