The Best Skin, Hair & Nail Supplements
Biotin, hyaluronic acid, and blends — including where the evidence genuinely runs thin.
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This is the category with the widest gap between marketing and evidence, so it's the one where an honest guide is worth the most. Biotin in particular is near-universal in beauty supplements and only demonstrably helps people who are actually deficient — which is uncommon.
We're upfront about which ingredients have support behind them and which are along for the ride, because a supplement you take for a year deserves that scrutiny.
Our picks
We’re still testing this category
We haven’t finished working through the shortlist here yet. The guide above covers what to look for in the meantime.
What we weighed
- Doses disclosed rather than hidden in a proprietary blend
- Third-party tested
- No megadoses of fat-soluble vitamins
- Realistic claims on the label
Ingredients that matter
- Biotin
- Ubiquitous. Genuinely helps if you're deficient; most people aren't.
- Oral hyaluronic acid
- Emerging evidence for skin hydration. Promising rather than proven.
- Zinc
- Well established for skin, and a common shortfall in real diets.