GHK-Cu vs Vitamin C for skin & hair
Short answer: For skin & hair, more users report improvement with Vitamin C — 97% of 29 reports, versus 87% of 202 for GHK-Cu.
GHK-Cu has 0 meta-analyses and 1 randomized trials on PubMed; Vitamin C has 738 and 2,072.
Based on 496 reports about GHK-Cu and 928 about Vitamin C. Not medical advice.
| GHK-Cu Peptide | Vitamin C Supplement | |
|---|---|---|
| Users say it helped | 62%helped223 reports · high confidence | 64%helped204 reports · high confidence |
| Verdict | Mostly positive | Mostly positive |
| Research | CResearch: Limited | AResearch: Strong |
| Meta-analyses / RCTs | 0 / 1 | 738 / 2,072 |
| Mainly used for | ||
| Skin & hair % reporting improvement | 87% (202) | 97% (29) |
| Pain & inflammation % reporting improvement | 90% (31) | 80% (15) |
| Immunity % reporting improvement | 100% (4) | 90% (40) |
| Recovery % reporting improvement | 96% (27) | 100% (12) |
| Energy % reporting improvement | — | 94% (34) |
| Common side effects | injection site, redness, stinging, injection pain | kidney stones, stomach issues, insomnia, bone pain |
| Typical dose reported | Not listed | 2000 mg / daily |
“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.”
The failure of vitamin C supplementation to reduce the incidence of colds in the general population indicates that routine vitamin C supplementation is not justified, yet vitamin C may be useful for people exposed to brief periods of severe physical exercise. Regular supplementation trials have shown that vitamin C reduces the duration of colds, but this was not replicated in the few therapeutic trials that have been carried out. Nevertheless, given the consistent effect of vitamin C on the duration and severity of colds in the regular supplementation studies, and the low cost and safety, it m
Cochrane Database Syst Rev, 2013 ↗“I know people say you get enough vitamin C from diet but I feel and look better when I supplement it.”
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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