Head to Head
Copper Grow 1% GHK-Cu + AHK-Cu Scalp & Hair Serum vs K18 HeatBounce Conditioning Heat Protectant Spray
A side-by-side comparison of specs, price, and where each one wins.
Specs, side by side
| Feature | Copper Grow 1% GHK-Cu + AHK-Cu Scalp & Hair Serum | K18 HeatBounce Conditioning Heat Protectant Spray |
|---|---|---|
| Price | $32.99 | $69.00 |
| GHK-Cu | Part of 1% peptide complex | — |
| AHK-Cu | Part of 1% peptide complex | — |
| Concentration | 1% peptide complex | — |
| Format | Leave-in scalp serum | — |
| Heat protection | — | Rated to 450°F / 232°C |
| Leave-in conditioning | — | Lightweight system |
| Finish | — | Bounce/movement focus |
| Price | — | $69 CAD |
Copper Grow 1% GHK-Cu + AHK-Cu Scalp & Hair Serum
A well-dosed entry in the copper-peptide hair trend with genuinely happy early owners. Bought with clear eyes, it's a promising experiment. Bought as a treatment, it's a disappointment waiting on a six-month timer.
Best for: Scalp-care enthusiasts who want to run the GHK-Cu experiment at a fair concentration and a fair price, alongside evidence-based approaches rather than in place of them.
Read the full review →K18 HeatBounce Conditioning Heat Protectant Spray
A true high-heat protectant with unusually pleasant leave-in conditioning, priced at roughly triple what rated drugstore protectants charge for the same temperature spec.
Best for: Frequent hot-tool stylists, the daily flat-iron and curling-wand crowd, who want maximum-rated protection wrapped in a weightless conditioning spray they'll enjoy using.
Read the full review →