GHK-Cu: an evidence-first deep dive

This quiz is separate from the lesson so you can finish learning first, then test what you retained.

Lesson checkpoint

GHK-Cu: an evidence-first deep dive checkpoint

This checkpoint tests the lesson you just completed. Passing marks it complete and unlocks the next course step.

Get every question correct to pass.

1. What is the biggest evidence trap with GHK-Cu?

Treating topical and mechanistic evidence as proof for every route and applicationIgnoring that it contains copperAssuming no laboratory research existsTreating all cosmetics as injectable medicines

2. Why does formulation matter so much for topical GHK-Cu?

Skin permeability and delivery determine whether the peptide reaches relevant tissueFormulation only changes the product colourEvery topical product produces identical exposureFormulation replaces the need for evidence

3. What did the small post-CO2-laser randomized study find objectively?

No significant between-group advantage for erythema, wrinkles or investigator-rated skin qualityLarge improvements in every measured outcomeA proven injectable effectA hair-growth endpoint

4. How should mixed results be presented?

Keep both the positive and negative findings visibleUse only the positive questionnaire resultUse only the negative objective result and ignore the restConvert the study into a general anti-ageing claim

5. Which area currently has the strongest direct human relevance for GHK-Cu?

Topical skin researchSystemic injectable therapyHuman tendon repairHuman performance enhancement

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