GHK-Cu vs Tretinoin for skin & hair
Short answer: For skin & hair, users rate them about the same: 87% report improvement with GHK-Cu (202 reports) and 91% with Tretinoin (35 reports).
GHK-Cu has 0 meta-analyses and 1 randomized trials on PubMed; Tretinoin has 76 and 265.
Based on 496 reports about GHK-Cu and 50 about Tretinoin. Not medical advice.
| GHK-Cu Peptide | Tretinoin Medication | |
|---|---|---|
| Users say it helped | 62%helped223 reports · high confidence | 91%helped23 reports · medium confidence |
| Verdict | Mostly positive | Mostly positive |
| Research | CResearch: Limited | AResearch: Strong |
| Meta-analyses / RCTs | 0 / 1 | 76 / 265 |
| Mainly used for | ||
| Skin & hair % reporting improvement | 87% (202) | 91% (35) |
| Pain & inflammation % reporting improvement | 90% (31) | — |
| Recovery % reporting improvement | 96% (27) | — |
| Weight loss % reporting improvement | 88% (8) | — |
| Mood % reporting improvement | 86% (7) | — |
| Common side effects | injection site, redness, stinging, injection pain | sunburn, irritation, skin peeling |
| Typical dose reported | Not listed | Not listed |
GHK-CuFull GHK-Cu profile →
What a user said
“Love it. 44 F. Totally helped even out my skin tone (Irish red cheeks), reduced wrinkles on my forehead and neck, thickened my hair which had been thinning, and grew my eye lashes.”
TretinoinFull Tretinoin profile →
Latest review conclusion
These guidelines provide evidence-based recommendations for the management of acne vulgaris.
J Am Acad Dermatol, 2024 ↗What a user said
“I have gotten good result on the acne front with tretinoin and azelaic acid.”
Related comparisons
Percentages come from first-hand user reports and are not clinical outcomes. Talk to a doctor before starting, stopping or combining anything. How we rate