Copper Tripeptide-1 (GHK-Cu)
Retinol
How to Layer These Actives in Your Routine
Copper Tripeptide-1 (GHK-Cu)
Apply first to clean, dry skin. Operates at pH 5.5–7.
Allows cutaneous acid mantle to equilibrate before the next step.
Retinol
Layer over the initial active. Operates at pH 5.5–6.5.
Biochemical Mechanism & Pharmacology
Copper Tripeptide-1 (GHK-Cu) and Retinol operate via distinct physiological mechanisms without reactive cross-oxidation or competing receptor antagonisms. They can be safely integrated into the same routine when sequenced properly from thinnest to thickest consistency.
Apply Copper Tripeptide-1 (GHK-Cu) (pH 5.5–7, Viscosity Tier 2) first. Wait 1–2 minutes for absorption, then follow with Retinol.
Recommended 7-Day Routine Blueprint
| Morning (AM) Routine | Evening (Night A) | Evening (Night B) |
|---|---|---|
✓Gentle Cleanser ✓Copper Tripeptide-1 (GHK-Cu) ✓Broad-Spectrum SPF 50+ | •Copper Tripeptide-1 (GHK-Cu) •Retinol •Barrier Cream | •Copper Tripeptide-1 (GHK-Cu) •Retinol •Barrier Cream |
Obstetric & Pregnancy Safety Summary
View Full Pregnancy Directory →Copper Tripeptide-1 (GHK-Cu) is classified as PERMITTED during pregnancy, while Retinol is classified as DEFER IN PREGNANCY under clinical guidelines. Always cross-reference with your physician if expecting.