Ingredient or product comparison
GHK-Cu Hair Growth Timeline: Response Factors Comparison
Age Under 35 35–50 Over 50 Younger follicles retain higher regenerative capacity. Dermal papilla stem cells decline with age Hair Loss Stage Norwood 2–3, Ludwig I Norwood 3–4, Ludwig I–II Norwood 5+, Ludwig III Early-stage miniaturisation responds faster; adva
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- Age
- Under 35
- 35–50
- Over 50
- Younger follicles retain higher regenerative capacity. Dermal papilla stem cells decline with age
- Hair Loss Stage
- Norwood 2–3, Ludwig I
- Norwood 3–4, Ludwig I–II
- Norwood 5+, Ludwig III
- Early-stage miniaturisation responds faster; advanced thinning requires longer follicle rebuilding
- GHK-Cu Concentration
- 2% daily
- 1–2% daily
- <1% or inconsistent
- Therapeutic threshold is 1% minimum; below that, follicle stimulation is suboptimal
- Baseline DHT Activity
- Low (on finasteride/dutasteride)
- Moderate (topical only)
- High (no DHT blockers)
- GHK-Cu works best when DHT suppression is already in place. Peptide alone rarely matches combination therapy
- Application Consistency
- Daily, same time
- 5–6 days/week
- Sporadic
- Follicle activation requires sustained peptide exposure; missed applications reset progress
- Scalp Health
- No inflammation, normal sebum
- Mild seborrheic dermatitis
- Chronic inflammation, fibrosis
- Inflamed or fibrotic scalp reduces peptide penetration and follicle responsiveness