best hair growth supplement
The Best Hair Growth Supplement for Women (and Men) in 2025: Our Top Pick
Finding a genuinely effective hair growth supplement is harder than it sounds. The market is flooded with single-ingredient biotin pills that promise the world and deliver little. The products worth your money go further — combining multiple nutrients that work together to support the full hair growth cycle, not just one piece of it.
The best hair growth supplements address hair, skin, and nails as a system. Biotin alone won't do much if your scalp lacks hydration or your strands are brittle from protein deficiency. That's why multi-complex formulas — ones that layer in collagen, keratin, hyaluronic acid, and a solid B-vitamin base — have become the standard for serious results.
We looked hard at what's available, and one formula stood out clearly. Here's our verdict.
#1 · NUTRAHARMONY
★ Editor's PickBiotin | Collagen | Hyaluronic Acid | Keratin - Hair Growth & Strength Support Vitamins - Skin & Nails Supplement - Clinically Tested for Men & Women - 25000mcg Vitamins B1, B2, B3, B6 & B7 - 60 Caps 60 Count (Pack of 1)
⭐ 4.5 · 18,193 ratings
NUTRAHARMONY built this capsule around a smart premise: hair health isn't a single-nutrient problem, so the solution shouldn't be either. You get Biotin, Collagen, Keratin, and Hyaluronic Acid together, alongside a full B-vitamin complex (B1, B2, B3, B6, and B7) plus Vitamins A and E and botanical extracts — all in a 60-count bottle designed for a two-month run. What separates this from the cluttered field is the clinical backing: a 90-day study with 80 women (Study #1-0602, 2024) showed support for a healthy hair growth cycle and visible improvements in scalp skin appearance. That's a real number, not a vague endorsement. The formula is also free of GMOs, gluten, and unnecessary fillers, which matters if you're taking something daily for months. It's suitable for all hair types including curly, textured, and color-treated hair, and the skin and nail benefits are built in rather than tacked on. If you're looking for a single supplement that earns its place on your shelf, this is it — though if you already take individual collagen or B-complex supplements, audit for overlap before doubling up.
Why we picked it
I recommend NUTRAHARMONY as the best hair growth supplement for most buyers because it solves the problem most supplements ignore: you can't support hair growth with one ingredient. This formula layers Biotin with Collagen, Keratin, Hyaluronic Acid, and a complete B-vitamin stack, which means you're addressing strength, structure, hydration, and the growth cycle simultaneously. The 4.5-star rating across more than 18,000 reviews tells you real buyers are seeing results, not just reading good label copy.
What makes me confident recommending it over the alternatives is the clinical study. A 90-day trial with 80 women is more rigor than most supplement brands bother with, and the transparency around that — including a specific study number — reflects a brand that isn't hiding behind vague claims. Whether you're dealing with thinning, breakage, or just want stronger, healthier hair overall, NUTRAHARMONY is the most complete starting point I've found.
If you're serious about supporting hair growth and want a formula you can actually trust, NUTRAHARMONY is the clear choice for most buyers. It combines the ingredients that matter — Biotin, Collagen, Keratin, Hyaluronic Acid, and a full B-complex — into one clinically tested, clean-label supplement that works for all hair types, men and women alike. It's the kind of product that earns its high rating rather than buying it.
There's only one pick here because, honestly, it's the one worth talking about. When a supplement checks every box — ingredient depth, clinical evidence, formula transparency, and thousands of verified reviews — the recommendation writes itself.