What Is GHK-Cu and Does It Work for Skin?

GHK-Cu is a copper-bound peptide found in plasma that falls with age. In a 12-week trial in 67 women, a cream with it softened lines, laxity, uneven tone and roughness, and in an 8-week comparison it measurably improved sun-aged skin, as did vitamin C and retinoic acid, with less irritation. Most evidence comes from lab, animal and small human studies, so expect gradual change with steady use.

What is GHK-Cu?

GHK (glycyl-L-histidyl-L-lysine) occurs naturally in human plasma, saliva and urine and declines with age, and researchers study it mainly bound to copper as GHK-Cu 2015 review. In lab work, reviews link GHK-Cu to collagen and elastin synthesis and to support for dermal fibroblasts, the cells that help keep skin firm 2018 review.

In animals, it sped wound healing in rats, mice, pigs and in the foot pads of dogs 2015 review. Those wound results do not show what a cream will do for your face, but they are why researchers kept testing it on skin.

Does it work for skin?

Women using GHK-Cu cream for 12 weeks showed improvements in facial lines, laxity, mottled pigment, sallow tone and roughness compared with plain cream, with no significant adverse events reported in that trial trial summary. In a separate 8-week comparison, GHK-Cu serum, vitamin C and retinoic acid cream all improved sun-aged skin measurably, but GHK-Cu brought fewer reports of irritation, redness and peeling trial summary.

Changes built over weeks, and small human studies describe gradual gains in texture and firmness after several weeks of consistent use 2026 news review. Large clinical studies remain limited, so we do not yet know how results vary across ages, skin types or longer use.

How to try it and what does it cost?

Human skin research used creams and serums applied to skin. That topical route is separate from injections, which Midi Health flags as having an approval gap and open safety questions while describing topical GHK-Cu as studied for aging skin Midi Health overview.

FormBlends listed 30 mL 2% cream at $40 to $60 in June 2026, 30 mL 4% cream at $50 to $75 in June 2026, and 30 mL 5% serum at $60 to $80 in June 2026 FormBlends pricing. The trials that reported gains lasted 8 and 12 weeks of steady use.