Verified ComparisonLast updated: 28 February 2026
Best Peptides for Hair Research
Hair research examines peptides that stimulate follicle health, promote anagen phase, and improve hair density. This overview ranks by hair-specific evidence.
GHK-Cu
Skin
4.4/ 5
A
Copper Peptides
Skin
4.3/ 5
A−
Editor's note
Copper-peptides (GHK-Cu-dominant) lead in hair research; broader class offers niche variants.
| Criterion | GHK-Cu | Copper Peptides |
|---|---|---|
| Hair-growth specificity | Very high (GHK-Cu) | High (class-wide) |
| Follicle-health data | Extensive topical | Topical + systemic |
| Clinical cosmetic products | Widespread (GHK-Cu) | Growing |
| Mechanism clarity | Established | Multi-pathway |
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