Biotin vs Collagen for skin & hair
Short answer: For skin & hair, more users report improvement with Collagen — 96% of 71 reports, versus 75% of 32 for Biotin.
Biotin has 30 meta-analyses and 77 randomized trials on PubMed; Collagen has 9 and 22.
Based on 101 reports about Biotin and 292 about Collagen. Not medical advice.
| Biotin Supplement | Collagen Supplement | |
|---|---|---|
| Users say it helped | 47%helped30 reports · medium confidence | 56%helped120 reports · high confidence |
| Verdict | Mixed | Mixed |
| Research | AResearch: Strong | AResearch: Strong |
| Meta-analyses / RCTs | 30 / 77 | 9 / 22 |
| Mainly used for | ||
| Skin & hair % reporting improvement | 75% (32) | 96% (71) |
| Recovery % reporting improvement | — | 94% (47) |
| Pain & inflammation % reporting improvement | — | 92% (24) |
| Sleep % reporting improvement | — | 100% (8) |
| Performance % reporting improvement | — | 100% (5) |
| Common side effects | acne, lab test, vivid hallucinations, paranoia | fatigue, insomnia, drowsiness, histamine episode |
| Typical dose reported | 2500 mcg / before bed | 7 g / daily |
This guideline should enable addressing suboptimal and deficient status of a bundle of MNs in at-risk diseases. In particular, it offers practical advice on MN provision and monitoring during nutritional support.
Clin Nutr, 2022 ↗“when I take Biotin my hair definitely looks thicker...I noticed faster growth of hair all over my body...a dozen follicles have started growing black hair.”
The findings of improved hydration and elasticity were also confirmed in the subgroup meta-analysis. Based on results, ingestion of hydrolyzed collagen for 90 days is effective in reducing skin aging, as it reduces wrinkles and improves skin elasticity and hydration.
Int J Dermatol, 2021 ↗“Within hours of consumption my consistent upper back pain is literally gone, but along with it comes dizziness and a feeling of aloofness.”
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