A deep treatment mask built on our top-selling GHK-Keratin Leave-In, for lightened hair that needs more.
Best for: Back bar treatment after lightening; the final step of the GSSG Bond System.
What's inside:
- GHK-Cu copper peptide: dosed high for a stronger-feeling, healthier-looking strand
- Keratin complex: fills in damaged, porous spots
- Amodimethicone: targets the most damaged areas for slip, softness and shine
What it does: Leaves damaged hair softer, smoother and glossier, with less breakage and frizz.
How to use: After shampoo, work through mid-lengths and ends. Leave 5–10 minutes, then rinse.
Fragrance: Jasmine, floral, woods
Size: 500 mL (16.9 fl oz) back bar jar