✨ Best Hair, Skin & Nails Supplements

Saw palmetto is the most commonly used supplemental DHT modulator, working by inhibiting 5-alpha reductase, the enzyme that converts testosterone to DHT. NOW Foods uses the 320 mg standardized extract used in trials, rather than multi-ingredient blends that bury active doses in proprietary formulas. Effects build over 3 to 6 months.

Low iron stores are common, especially in women, and are worth checking before trying other things for thinning hair. Iron bisglycinate (Ferrochel®) is gentler on the stomach than ferrous sulfate. Take it only if bloodwork shows your levels are low, since too much iron is harmful.

Contains Verisol® bioactive collagen peptides, the collagen form with clinical trial evidence specifically for hair thickness. A 16-week placebo-controlled trial in women aged 39 to 75 reported improved hair thickness at 2.5 g/day. That brand-specific evidence is what separates it from generic hair vitamins.

The #1 dermatologist-recommended hair growth supplement brand. The Women's formula targets root causes of thinning hair in women 18-44, including stress, lifestyle factors, and nutrient gaps. Contains a proprietary blend of 21 ingredients including saw palmetto, ashwagandha, marine collagen, and a clinically-studied biotin complex. Has multiple published clinical trials — more than most multi-ingredient hair formulas. Visible results typically take 3-6 months of consistent use.