Hair-fall supplements: 90% are biotin theatre. Here's the 10% that work.
Nutrafol, Viviscal, Sugarbear, Olly — most are biotin-padded multivitamins sold at a luxury markup. The real fix is usually iron, sometimes minoxidil, almost never a gummy.
Scorecard
- Potency — Strong. Ferrous bisglycinate 25mg and topical minoxidil 5% are the two clinical doses that move the outcome.
- Bioavailability — Strong. Bisglycinate iron is gentle and absorbed; topical minoxidil is direct.
- Marketing vs hype vs reality — Mixed. The category as a whole is 90% biotin/keratin gummies that do nothing; the two real actives are buried under the noise.
- Sustainability — Mixed. Small bottles, low transport burden, but plastic.
- Ethics — Strong. Commodity actives, multiple generic manufacturers, no single brand monopoly.
Verdict: Worth it — for iron (only if ferritin is low on a blood test) and minoxidil. Skip everything else in the aisle.
You started shedding more in the shower. You searched. The algorithm now thinks you have a problem. Instagram is feeding you Nutrafol ads, TikTok is feeding you rosemary oil, and your inbox has six "hair growth" pouches in it. Most of them will do nothing for you, because most hair loss is not a vitamin problem.
Hair-fall supplements work backwards: they sell you the gummy first, then convince you the deficiency exists.
What's actually true. Hair shedding has a handful of real, known causes. The big ones: iron and ferritin deficiency (very common, especially in menstruating women and vegetarians), thyroid dysfunction, postpartum hormone shifts, severe protein under-eating, scalp inflammation, androgenetic alopecia (genetic, both sexes), and stress-induced telogen effluvium 2–4 months after a major event. The wellness-supplement industry talks about "supporting" all of these without actually testing for any of them.
Why most "hair vitamins" are theatre.
Biotin. Almost every hair gummy is built around biotin (B7) at 5,000–10,000mcg per serving. True biotin deficiency in adults is rare. Supplementing biotin when you don't need it does nothing for your hair — and it does mess up several common lab tests (thyroid panels, troponin, vitamin D), which is why endocrinologists tell people to stop biotin before bloodwork. So the headline ingredient is mostly inert and sometimes diagnostically harmful.
Marine collagen + "proprietary herbal blend." The Nutrafol-style "ashwagandha + saw palmetto + curcumin + tocotrienols" stack has some small industry-funded trials showing modest shedding reduction. The trials exist. They're also small, short, and on women paying $88/month — placebo effects in that demographic are notoriously high. It might work. It's not magic.
Sugar-coated multivitamin gummies. Sugarbear, Olly, Hairburst-style: a multivitamin with extra biotin and a gummy delivery system. Fine, harmless, expensive. Not therapeutic.
Before you spend €60/month on a hair gummy, spend €30 on a ferritin and TSH blood test. The result usually changes everything.
The polyvagal bit, briefly. Yes, chronic stress drives telogen effluvium, and yes, nervous-system regulation matters for hair. But a gummy is not regulating your nervous system. Sleep, blood sugar stability, and stopping under-eating are. Address those before the supplement aisle.
What actually works (the 10%).
- Iron, if your ferritin is low. This is the single highest-leverage intervention for most shedding women. Target ferritin >50 ng/mL (some derms argue >70). Test first.
- Topical minoxidil (2% or 5%). FDA-approved for both male and female pattern hair loss. Decades of evidence. Costs €15/month. Works for the majority who use it consistently for 4+ months.
- Fixing the actual cause. Thyroid medication if underactive. Adequate protein (1.2g/kg minimum). Treating scalp conditions like seborrheic dermatitis. Stopping aggressive heat or bleach. For androgenetic loss, finasteride or spironolactone via a doctor.
Who should consider a supplement. People with a documented deficiency, treating that specific deficiency. People who've already done iron, minoxidil, and the basics, and want to try a herbal stack as adjunct — fine, give it 4 months.
Bottom line. Test before you supplement. Cheap things work. Expensive gummies usually don't. We're carrying the boring, evidence-backed options — iron, minoxidil, the basics — in the shop below.
Kokorology has the "why we panic-buy when we lose hair" psychology piece. The clean shop swaps that actually work are here.
- Potency
- Solid. The 10% that work (iron when low, minoxidil topically) work at the doses they are studied at. The other 90% are biotin theatre.
- Bioavailability
- Mixed. Biotin is well-absorbed and almost never deficient. Iron deficiency is the actual mechanism most women's hair loss runs through.
- Marketing vs hype vs reality
- Weak. Industry-wide. 'Hair growth gummies' is a category overclaim.
- Sustainability
- N/A — this is a category review.
- Ethics
- Mixed. Sugarbear and Olly will outsell the GP referral every time.
- Verdict
- A guide, not a product — and the only honest answer is 'go test your iron'.
