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Peptide care
Med-spa questions

Separate · GHK-Cu on skin

A cream claim still needs a careful reading

Ask whether the cream is said to change how skin looks or how it works.

Next · GHK-Cu by injection

Read the claim beside the study

Read the promised change

Cosmetic rules recorded as of September 30, 2026 generally do not require FDA approval before sale, apart from color additives.

The company still bears legal responsibility for cosmetic product safety.

Skin gets part of its strength from the protein collagen.

FDA treats a cream claimed to make skin produce more collagen as a drug, even if it is sold among cosmetics.

Read beyond the ingredient story

The 2025 and 2026 reviews found gaps in GHK-Cu research in people; most studies tested face creams in small groups.

Ask what a study measured. Was the result a visible change, a measurement from a skin sample or an opinion on a form?

Ask whether the tested cream matches the proposed product. Keep the answer with the study.

A thin streak of pale-blue copper-peptide cream across the naturally textured back of an adult hand.
Keep the cream’s claimed purpose beside the study that tested it.

Make the comparison specific

  • Which ingredients were in the tested product?
  • What was it compared with?
  • What did the researchers actually find?
  • What limits did the researchers describe?

Keep the claim in its lane

A study of a skin product answers a question about that product and that use.