Skin & Cosmetics

Clinical evidence for wrinkle reduction, firmness, photoaging reversal, and comparison to retinol

The Science of Skin Renewal

The strongest clinical evidence for GHK-Cu comes from dermatology. A randomized, double-blind trial showed 55.8% wrinkle volume reduction. Head-to-head comparisons found it outperformed both vitamin C and retinoic acid for collagen production. This unit examines every major skin study and what the data actually shows.

interactive skin layers

Knowledge Check

Test what you've learned about GHK-Cu's skin and cosmetic evidence.

Practice Exercises

Reinforce your understanding.