Different hair types need different levels of conditioning.
Pick the one that resonates most.
Your hair is made of keratin protein held together by bonds. When those bonds break (from heat, color, friction), no amount of silicone coating will fix them. You need ingredients that actively signal repair.
Copper is a critical cofactor for lysyl oxidase — the enzyme that cross-links proteins in your hair. Without adequate copper, hair becomes weak and brittle.
GHK-Cu delivers bioavailable copper directly where it's needed, supporting stronger, more resilient strands from root to tip.
Pyo et al. 2007 | Pickart et al. 2012
Conditioner stays on your hair longer than shampoo, giving GHK-Cu time to penetrate the strand and nourish the scalp.
Combined with a clean base (no silicones, no parabens), your hair actually absorbs the peptide instead of being blocked by chemical coatings.
Blow dryer, flat iron, curling iron, etc.
With consistent use, expect noticeably softer, stronger hair by this date.
GHK-Cu Peptide Conditioner
Lasts 6-8 weeks with regular use
Pair with the CU Shampoo for the full protocol — clean scalp + repaired strands, every wash.
Add CU Shampoo • €29.95