Peptide GuideGHK-Cu

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All healing & recovery peptides

GHK-Cu

CollagenSkin repair

GHK-Cu is a naturally occurring copper-binding tripeptide found in human plasma. Levels decline with age, and it is one of the most widely studied peptides in skin and wound-healing research.

What does it do?

Promotes collagen and elastin so skin can look firmer and more elastic
Supports tissue remodeling after wear, injury, or aging
Helps reduce the look of fine lines over time
Can support healthier looking hair and calmer skin
Helps the skin handle oxidative stress and irritation
Supports repair without forcing a harsh peel or purge

How does it work?

Binds copper and delivers it to enzymes that rebuild tissue
Turns on genes tied to collagen, elastin, and matrix repair
Helps clean up damaged tissue and then organize new fibers
Boosts antioxidant defenses in the skin
Supports fibroblast activity and new blood vessel signaling
Uses copper dependent enzymes to crosslink and strengthen new collagen

What to expect?

Skin can feel a bit firmer and look more even as the weeks go by
Fine lines tend to soften slowly instead of vanishing right away
The face may look fresher, like you have been sleeping and taking care of it
Some people notice less shedding and hair that feels a little healthier
The change is quiet and cumulative, so photos a month apart show it better than the mirror does day to day

How it's typically administered

Sub-Q injectionSubcutaneous injectioncommon in research settings
Topical serum or creamTopical serum or creamwidest cosmetic use
Nasal sprayNasal sprayless common; limited absorption data
Oral capsulesOral capsulesbioavailability is debated

How it's typically dosed

Most common dose1–2 mg
Frequency5 days a week
Cycle duration10–12 weeks

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