Body & Skin
Beauty
Beauty reviews
Supplements for skin, hair and nails, with clear notes on where the evidence is solid and where it's mostly marketing.
What we cover
- Collagen peptides for skin elasticity and hydration
- Biotin and "hair, skin and nails" formulas
- Hyaluronic acid and antioxidant blends
- What has stronger evidence: sunscreen and retinoids
Common ingredients and the evidence
| Ingredient or option | Used for | Evidence | Notes |
|---|---|---|---|
| Daily sunscreen | Preventing skin aging | Strong | The baseline for any skin routine. |
| Collagen peptides | Skin elasticity, hydration | Limited | Independent trials show less benefit. |
| Oral hyaluronic acid | Skin hydration | Limited | Few, small trials. |
| Biotin | Hair, nails | Insufficient | Helps only with rare deficiency; affects lab tests. |
Ratings follow our evidence scale and are updated as new research appears.
Claims to be careful with. Supplements can't reverse aging or regrow hair lost to genetics. The FDA has warned that high-dose biotin can interfere with lab tests.
Read on the blog
See a doctor if…
You have sudden hair loss, patchy hair loss or skin changes. These can be signs of thyroid or other conditions.
Medical disclaimer →These statements have not been evaluated by the Food and Drug Administration. Products discussed are not intended to diagnose, treat, cure, or prevent any disease.