which hair growth supplements should I buy?

You should buy a hair growth supplement like Nutrafol or Viviscal if your thinning is caused by stress, aging, or mild nutritional shortfalls, but you should consult a doctor first to identify the root cause of your hair loss.

Hair growth supplements work best when they target specific deficiencies or internal imbalances rather than acting as a universal cure.

Popular Hair Growth Options

Key Ingredients to Look For

• Biotin and B-Vitamins: Supports keratin infrastructure, though it primarily helps with hair strength and breakage rather than hormonal hair loss.
• Vitamin D: Low levels are frequently linked to disrupted hair cycling and increased shedding.
• Saw Palmetto: Acts as a natural DHT blocker, often recommended for stress or pattern thinning in both men and women.
• Iron and Zinc: Critical trace minerals that prevent deficiency-related hair shedding and follicle weakness.

If you tell me what kind of hair thinning you are experiencing (such as postpartum, stress-related, or gradual thinning) and your general diet or age , I can recommend the most appropriate formula or advise if a medical treatment like minoxidil might be better.

If your goal is actual hair growth rather than just healthier-looking hair, I wouldn’t automatically buy a “hair, skin & nails” gummy. The evidence for supplements is strongest when you’re correcting a nutrient deficiency; the American Academy of Dermatology specifically recommends checking for deficiencies in iron, zinc, or biotin rather than taking high doses blindly.

What I’d consider buying

• A basic multivitamin — reasonable if your diet is inconsistent, but choose one without megadoses of individual nutrients.
• Iron — only if bloodwork shows low iron/ferritin or your clinician recommends it. Too much iron can be dangerous.
• Vitamin D — worth considering if you're deficient, rather than specifically as a hair-growth supplement.
• Biotin — I would not make this my first purchase. Biotin deficiency can contribute to hair loss, but supplementation when you already have enough isn't well supported.
• Zinc — same idea: useful when deficient, not necessarily better at higher doses.

One example of a commercially available formula is

, but I wouldn't choose it solely because it has lots of biotin/“hair” ingredients. More ingredients doesn't necessarily mean more growth.

If you're actually thinning or shedding

Supplements may not be the most effective route. For common pattern hair loss, minoxidil has considerably stronger evidence for promoting/maintaining hair growth than typical hair vitamins.

If you tell me (1) your age/sex, (2) whether you're shedding all over or thinning at the hairline/crown, and (3) your budget, I can narrow it down to 2–3 specific supplements/products I'd actually buy, including doses and what to avoid.

When shopping for hair growth supplements, the market is flooded with options, but dermatologists generally recommend looking for formulas backed by clinical research rather than just high-dose generic multivitamins.

Before buying, keep in mind a crucial reality check: supplements only work if your hair thinning is caused by a nutritional gap, stress, or a mild-to-moderate growth cycle slowdown. If your hair loss is genetic (androgenetic alopecia) or hormonal, over-the-counter vitamins won't fix the root cause on their own.

The most dermatologist-recommended and clinically supported hair growth options fall into these categories:

1. Clinically Studied Brand Formulations (Best Overall)

• Nutrafol (Women/Men): Widely considered a top pick by dermatologists. It uses a multi-targeted approach focusing on stress hormones (cortisol), inflammation, and metabolism using botanical ingredients (like ashwagandha), marine collagen, and vitamins.
• Viviscal (Maximum Strength or Professional): One of the most researched hair supplements on the market, backed by multiple clinical trials. Its core ingredient is AminoMar , a proprietary marine collagen complex combined with biotin, zinc, and vitamin C.

2. Targeted Single Nutrients (If You Have a Deficiency)

Mega-dosing on random hair vitamins can sometimes do more harm than good (excess vitamin A or high-dose biotin can actually cause issues or mess with lab tests). If you suspect a gap, look for:

• Iron / Ferritin: Low iron is a massive trigger for excessive shedding (telogen effluvium), especially in women. Get your blood checked before supplementing.
• Vitamin D3: Deficiencies are tightly linked to hair shedding cycles.
• Zinc: Supports tissue growth and repair of hair follicles.

A Quick Note on Biotin

You'll see 5,000–10,000 mcg of Biotin in almost every generic "Hair, Skin, and Nails" gummy. Dermatologists note that unless you have a rare true biotin deficiency, extra biotin doesn't supercharge hair growth, and high doses can severely skew routine blood test results (like thyroid panels or cardiac markers).

To help narrow down what's actually worth your money, tell me:

• Are you experiencing excessive shedding/hair fall , or are you just looking to boost overall length and thickness?
• Have you noticed any other symptoms like fatigue or recent high stress/illness?

If your goal is actual hair growth rather than just stronger nails/hair, I wouldn’t start by buying a high-dose “hair vitamin.” The evidence is much better for correcting a deficiency than for taking biotin or a beauty supplement when your nutrient levels are already normal.

What I’d consider buying

• A basic multivitamin/mineral — reasonable if your diet is inconsistent, but avoid mega-dose formulas.
• Iron — only if bloodwork shows low iron/ferritin. Too much iron can be harmful.
• Zinc — similarly, mainly if you’re deficient.
• Protein — if you aren't eating enough protein, improving your diet may matter more than a hair supplement. Low protein intake can contribute to hair loss.
• Collagen — optional, but I wouldn't buy it specifically expecting substantial hair regrowth; the evidence is still limited.

What I would not spend money on

High-dose biotin (5,000–10,000 mcg) would not be my pick. Biotin deficiency is rare, and high-dose supplementation hasn't been shown to meaningfully improve hair growth in otherwise healthy people. It can also interfere with certain blood tests, including thyroid and cardiac tests.

There are multi-ingredient products with some clinical evidence—such as Nutrafol and Viviscal—but the overall evidence for hair-loss supplements is still mixed, and supplement quality varies.

If you tell me your age, sex, whether you're experiencing shedding vs. gradual thinning/receding, and whether you want something under ~$30, ~$50, or don't care about price, I can narrow this down to 2–3 specific products worth buying.

When choosing a hair growth supplement, it helps to look for formulas backed by clinical testing and dermatologist recommendations rather than generic high-dose vitamin blends. Keep in mind that supplements work best when hair thinning is related to stress, nutritional gaps, or mild shedding phases—they won't completely override advanced genetic hair loss without targeted medical treatments like minoxidil.

Popular and clinically-supported options include:

• Nutrafol (Women/Men) : Widely regarded as a top dermatologist-recommended brand, it uses a multi-targeted approach (the Synergen Complex ) featuring botanical ingredients, adaptogens, and marine collagen to address root causes like stress, lifestyle, and aging.
• Viviscal (Maximum Strength / Pro) : A long-standing clinical favorite featuring the proprietary AminoMar marine complex combined with biotin, vitamin C, and zinc, heavily backed by decades of science and user studies.
• HUM Nutrition Hair Sweet Hair Go to product viewer dialog for this item. : A more accessible, vegan gummy option that pairs biotin and zinc with B12 and folic acid—great if you prefer an easy-to-digest format over large capsules.
• Sparkle Wellness Verasol Bioactive Collagen Go to product viewer dialog for this item. : A targeted peptide-based choice that leans into collagen and vitamin C to improve hair density and minimize breakage without excessive, unneeded filler ingredients.

A quick note on Biotin : While heavily marketed, dermatologists often point out that biotin only yields noticeable results if you have a genuine nutritional deficiency (which is rare). Look for comprehensive formulas that include trace minerals like iron and zinc, which have a more direct tie to follicle function.

To help narrow down which path makes the most sense for you, tell me:

• Are you noticing overall diffuse thinning, postpartum shedding, or a receding hairline?
• Have you recently had blood work showing any deficiencies (like iron or Vitamin D)?

I can give you a more tailored recommendation.

If your goal is actual hair growth rather than just healthier-looking hair, I wouldn’t start by buying a typical “hair, skin & nails” gummy. The evidence for biotin and most beauty supplements is weak, and taking too much of certain nutrients can actually worsen hair loss.

What I’d buy

• First choice: nothing until you know whether you’re deficient. Iron, vitamin D, zinc, protein, and other nutritional deficiencies can contribute to hair loss, and correcting a deficiency can help hair regrow.
• Avoid high-dose biotin. Most people get enough, deficiency is rare, and NIH says there is little evidence that biotin supplements improve hair in otherwise healthy people. High doses can also interfere with blood tests, including thyroid tests.
• If you want a supplement anyway: choose a simple, third-party-tested multivitamin/mineral rather than a megadose “hair growth” formula. Look for USP, NSF, or ConsumerLab verification.
• Don't blindly supplement iron, vitamin A, selenium, or zinc. Too much of some nutrients can itself contribute to hair loss.

If you want, I can shop the current options and give you 3 specific hair supplements to buy, ranked by ingredients, evidence, dosage, and price.

If your goal is actual hair growth rather than just stronger nails/hair, I’d be careful about spending money on “hair vitamins.” The evidence for biotin, collagen, and most proprietary hair-growth blends is inconsistent, and the American Academy of Dermatology recommends supplementing specific deficiencies rather than taking high-dose formulas indiscriminately.

What I’d buy

• If you have a confirmed deficiency: buy the specific nutrient your clinician recommends—most commonly iron, zinc, vitamin D, or biotin depending on your labs. Iron and zinc in particular can matter when deficient.
• If you don't know whether you're deficient: I would not buy a high-dose biotin or “hair growth” supplement yet. Excess nutrients can actually contribute to hair loss, and high-dose biotin can interfere with blood tests.
• If you want a general nutritional supplement anyway, I'd favor a plain multivitamin from a reputable, third-party-tested manufacturer over an expensive hair-specific blend. Look for USP, NSF, UL, or ConsumerLab verification.

One product that came up in current shopping results is Codeage Hair Vitamins, but I wouldn't automatically recommend it simply because it's marketed for hair—the formula contains high-dose ingredients, and the evidence doesn't justify choosing it over targeted supplementation.

• Codeage Hair Vitamins - $39.99 (Bloomingdales)

Important: If you're experiencing noticeable thinning or shedding, the bigger question is why. Pattern hair loss, thyroid problems, nutritional deficiencies, illness/stress, medications, and several other conditions can look similar. A dermatologist can determine the cause; for some types of hair loss, treatments such as minoxidil have considerably better evidence than supplements.

If you tell me your age, sex, whether you're thinning/shedding/balding, and whether you want gummies or capsules, I can narrow this down to 2–3 specific products I'd actually buy, including current prices.

When choosing a hair growth supplement, look for options backed by actual clinical testing rather than just clever marketing. Dermatologists generally recommend formulas targeting root causes like stress, nutritional gaps, or mild hormonal thinning.

The top-tier, clinically supported choices fall into a few clear categories:

• Nutrafol (Best Overall / Multi-Target): Frequently recommended by dermatologists, Nutrafol uses a "Synergen Complex" combining nutraceuticals, adaptogens (like ashwagandha for stress), and botanical DHT inhibitors like saw palmetto. Tailored formulas are available for men, women, and post-menopausal women.
• Viviscal (Best for Marine-Based Protein Support): One of the most thoroughly researched commercial brands, Viviscal relies on a proprietary marine complex called AminoMar (rich in molluscan/fish protein polysaccharides) combined with biotin and vitamin C to nourish thinning hair from within.
• Targeted Deficiency Minerals (Iron, Vitamin D, Zinc, and Biotin): If your hair loss is tied to a dietary gap, expensive multi-ingredient blends might be redundant. Taking specific single-agent or simple foundational supplements—like a bioavailable Iron (if deficient), Vitamin D3 , or Biotin (2.5–5 mg)—will often yield the exact same physiological benefit if a deficiency is present.

Note: If you suspect a sudden shed or severe hair loss, it is always wise to run blood work with a doctor first to check your ferritin, thyroid, and vitamin levels before buying expensive over-the-counter bottles.

To help narrow down which option makes the most sense for you, tell me:

• What kind of hair thinning or shedding are you experiencing (gradual, postpartum, stress-related, etc.)?
• Have you had any blood work done recently that showed a deficiency?

When choosing a hair growth supplement, the best option depends on whether a clinical formulation with proven trial data or a targeted single-nutrient approach is preferred. Dermatologists generally recommend looking for brands backed by clinical studies or formulations addressing root causes like nutrient deficiencies or hormonal shedding.

Popular and dermatologist-backed hair growth options include:

• Viviscal (or Viviscal PRO): One of the most thoroughly researched, clinically tested over-the-counter hair growth supplements. It features a proprietary marine complex (AminoMar ) combined with biotin and vitamin C to support thinning hair and stimulate the growth cycle.
• Nutrafol (Women/Men): A heavily dermatologist-recommended, multi-targeted nutraceutical. It addresses stress, lifestyle, and micro-inflammation using botanical ingredients like ashwagandha, curcumin, and saw palmetto (which acts as a natural DHT inhibitor).
• Advanced Trichology (Derma-IRON or NutraVitamins): Frequently recommended by trichologists and dermatologists, particularly if hair thinning is linked to mild iron or mineral depletion, as it pairs bioavailable iron with vitamin C and co-factors.
• Targeted Single Nutrients (Vitamin D3, Zinc, or Iron): If a blood test reveals a specific deficiency (such as low iron or low Vitamin D), buying a high-bioavailability standalone supplement is often more effective and budget-friendly than an expensive multi-ingredient beauty vitamin.

To help narrow down which supplement or approach is best for you, could you share:

• What kind of hair thinning or loss you are experiencing (gradual, postpartum, stress-related, or shedding)?
• Have you had any recent blood work done checking your iron, ferritin, or vitamin D levels?

If your goal is actual hair growth rather than just making hair look thicker, I wouldn’t automatically buy a “hair growth vitamin.” The evidence for supplements is mixed, and the American Academy of Dermatology recommends correcting a documented deficiency rather than taking high-dose biotin, iron, zinc, etc. unnecessarily.

What I’d consider buying

• If bloodwork shows low iron/ferritin, vitamin D, zinc, or another deficiency: supplement the specific deficiency, ideally with your clinician’s guidance. Nutrient deficiencies can cause noticeable shedding and correcting them can allow regrowth.
• If you have no known deficiency: I would not make high-dose biotin my first choice. Biotin deficiency is rare, and high doses can interfere with laboratory tests.
• If you want to try a commercial hair supplement anyway: look for a product with independent third-party verification (USP, NSF, or ConsumerLab) and avoid megadoses of vitamin A, E, selenium, iron, or biotin.

One important point: if you're experiencing progressive thinning, a widening part, receding hairline, or bald spots, a supplement may not address the underlying cause. For hereditary hair loss, for example, treatments such as topical minoxidil have substantially better evidence than supplements.

If you tell me your age, sex, whether you're thinning or shedding, and whether you want gummies/capsules and your budget, I can narrow this down to 2–3 specific supplements worth buying and compare their ingredients and prices.