The 6 best hair supplements, according to a dietitian (2025)

If you want strong, shiny, and healthy hair, know that nutrition plays a fundamental role. A balanced diet rich in essential nutrients, such as proteins, vitamins, and minerals, is essential for having beautiful hair.

However, even with a healthy diet, our modern lifestyle can lead to nutrient deficiencies necessary for good hair quality.

This is where dietary supplements come into play, with a variety of formulas specifically targeted for hair health. I believe these products are a convenient and effective way to provide the nutrients your hair needs to be in great shape. 

To help you see things more clearly, I compared the compositions of 15 of the best-selling products online and selected the top 6 for you based on 3 criteria.

Here is the list of brands studied: NHCO, Novoma, Nutri&Co, Forte Pharma, Nutralie, Aime, Amoseeds, Luxeol, Lashilé Beauty, Nutrimea, Arkopharma, Natural Elements, Vitavea, Valebio.

📚 Also read | Best anti-hair-loss supplement : a pharmacist’s opinion

We evaluate all dietary supplements independently. If you click on one of the links provided, a commission may be paid to us, without this affecting the price or the ranking.

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Summary of my selection

# Best hair supplement 🥇
> The Hair Complex – Nutri&Co

# Best hair & nails supplement
> Hair Formula – Novoma

# Best organic hair supplement
> Organic Hair Complex – Amoseeds

# Best value for money
> Hair Complex – Nutralie

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Methodology

To carry out this comparison, I defined 3 qualitative criteria based on nutritional characteristics, product safety, and the brand’s reputation. 

Each criterion is scored out of 5 and the average of the 3 criteria determined the final selection.

→ View my complete comparison spreadsheet here (Google Sheet)

Best hair supplements: my opinion

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The Hair Complex – Nutri&Co: best hair supplement 🥇

Nutri&Co is a French brand established in 2017; it offers dietary supplements for sports, health, and beauty. 

Although it contains only two active ingredients, biotin and keratin, the Nutri&Co hair complex receives a very good score in our ranking. Notably thanks to its safety, with a flawless formula without controversial additives but also a rare transparency. 

Indeed, with Nutri&Co there is no doubt: we know everything about the product we are buying.

The cynatine® keratin used is a patented keratin, made in France, soluble and bioavailable. Its effectiveness is clinically proven.

The biotin is extracted by fermentation and filtration in a laboratory located in China. It is in the form of D-biotin that is bioactive and highly bioavailable. 

Nutri&Co capsules contain 200% of the NRV for biotin and 500 mg of keratin.

The brand’s customer service is efficient and very fast. I received a response a few hours after requesting information.

Nutri&Co is a brand with excellent reviews; it has a rating of 4.6/5 on Trustpilot. In addition, it is followed by 64,000 people on Instagram. 

A one-month course of the Nutri&Co hair complex costs €26.90, which is €0.69 per day. This price is a little high compared with the product’s composition, but it is perfectly justified by the quality of the ingredients that make up the course.

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Effluvium – NHCO: best alternative

NHCO is a French dietary supplement brand created in 2008 by a pharmacist expert in micronutrition. This brand is characterized by adding specific amino acids to its formulas as needed.

Effluvium contains 20 active ingredients which makes it the dietary supplement with the most active ingredients. It notably contains iron, bisglycinate zinc at 150% of the NRV as well as 100% of the NRV in biotin. 

To complete its formula, NHCO includes 3 plant extracts: pepper and arugula which promote microcirculation, and horsetail, rich in silica essential for hair production. 

The formula is optimized by a high concentration of keratin, the presence of amino acids, and collagen. 

NHCO’s dietary supplements are made in France and contain no additives, and their formula is created by a specialized scientific committee.

Only downside, the origin of all the ingredients that make up the capsule is unknown.

NHCO is a trusted brand that has been operating for 16 years, it receives a very good rating of 4.8/5 on review sites and has 33K followers on Instagram.

Its customer service is efficient and fast.  

A box of Effluvium costs €42.90 and is valid for 10 weeks of treatment. This represents €0.62 per day. The price is in the average range, which is attractive for a product of this quality.

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Hair Formula – Novoma: best hair and nails supplement

Novoma is a French brand founded in 2012; it specializes in dietary supplements for fitness and health. 

The Novema hair formula contains 7 active ingredients with very good bioavailability. It notably provides 100% of the NRV for zinc bisglycinate and 200% of the NRV for biotin in a bioactive form.

It also contains 500 mg of hydrolyzed Cynatine® keratin, the amino acid arginine known to improve hair growth and two plant extracts that promote microcirculation, arugula and blueberry. 

Novoma capsules are plant-based and do not contain any controversial additives. The formulas are developed and manufactured in France in a Toulouse laboratory. 

The formula is also effective for nail growth and nail health. 

Novoma has a rating of 4.6/5 on the review site Trustpilot. The brand is followed by 14.5K  followers on Instagram. Unfortunately I could not find the certificates proving the product’s quality and safety on the website. 

Novoma’s customer service answered my questions accurately, but lacks responsiveness. It took me 6 days to get a response. 

A one-month course of Novema’s hair formula costs €24.90, which amounts to €0.80 per day. 

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Good Hair – Lashilé Beauty: best hair gummies

Lashilé Beauty is a French laboratory specializing in nutricosmetics. Since 2017, the brand has been revolutionizing the world of dietary supplements with its gummies.

Good Hair contains 13 active ingredients with a complex of vitamins and minerals, including 55% of the NRV for zinc and 1800% of the NRV for biotin. I find it unfortunate that the amount of zinc is so low, and that the amount of biotin is so high. 

Providing such high doses has no additional effect because water-soluble vitamins like biotin are eliminated in the urine when taken in excess.

Hair Complex also contains two plant extracts, horsetail (rich in silica) and bilberry, which activates microcirculation. 

Lashilé Beauty’s gummies are vegan, made from maltitol, pectin, and citric acid. There are no other additives.  

Maltitol is a naturally derived sweetener that poses no health risk; however, it can cause stomach pain in large amounts in sensitive individuals.

The gummies are manufactured in France; unfortunately, there is little information on the origin of the active ingredients, particularly the plant extracts.

Dermatologically supervised clinical tests showed efficacy in 100% of users after a 3-month course. Unfortunately, the number of participants in this study is unknown. 

Lashilé has a 4 out of 5 rating on Trustpilot and a large community on Instagram with 117K followers. 

Its customer service is fast and efficient, it answered my questions precisely in less than 24 hours. 

A course of Good Hair costs  €24.90 for 1 month, i.e., €0.83 per day.

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Hair Complex – Nutralie: best value for money

Nutralie is a Spanish brand created in 2018. Hair Complex contains 16 active ingredients, a comprehensive range of vitamins and minerals including 35% of the NRV in bisglycinate iron, 65% of the NRV in zinc and 900% of the NRV in biotin. Mineral absorption is good. 

The formula contains cysteine, an amino acid naturally present in keratin but also four plant extracts known for their anti-hair-loss properties, notably saw palmetto and pumpkin seed.

Nutralie capsules are plant-based; they contain two additives, magnesium stearate, which is not controversial, and silicon dioxide, considered questionable by the magazine Que Choisir.

Nutralie’s customer service is exemplary with a response given in less than 24 hours after sending the request. 

A small caveat regarding the lack of transparency about the ingredients used. I would have liked to find quality certificates on the website.

Nutralie has 4.6/5 on review sites like Trustpilot and has 10K followers on Instagram.

A 3-month course of Hair Complex costs 24.90 euros, which comes to only 0.27 euro per day. Hair Complex proves to be the best value for money in our comparison.

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Organic Hair Complex – Amoseeds: best organic hair supplement

Amosseeds is a French brand specializing in selling organic superfoods since 2019. 

The Amosseeds hair complex contains only 3 organic plant extracts. The presence of plant extracts without other active ingredients allows it to obtain organic certification, which is impossible for supplements containing vitamins and minerals. 

The plants used are blueberry, whose richness in antioxidants stimulates the hair follicle. Horsetail, rich in silica, contributes to hair beauty, and arugula activates microcirculation, enabling good nourishment of the follicle. The plants are highly concentrated to optimize effectiveness.

At Amosseeds, the capsules are plant-based and contain no additives. They are manufactured in France. 

The plants used come from Europe but the country of origin is not known. Unfortunately, no traceability certificate can be found on the website.

Amoseeds has a rating of 4.5/5 on Trustpilot and has 15.3K followers on Instagram.

Customer service answered my questions well and precisely, but the response time was more than a week. That’s a bit long.

A one-month treatment costs €17.99, i.e. €0.59 per day.

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Selection criteria

1. Nutritional value

Amount of active ingredient in the product

To care for hair, many elements are necessary. The more active ingredients a product contains, the more likely it is to target the underlying problem. It will then be more effective. 

Adequate amounts of iron and zinc

These two minerals are very important for hair growth. For women, who are often iron-deficient, its presence is a real advantage in the dietary supplement.

Zinc, for its part, is severely lacking in our daily diet. For a significant effect on hair growth, a minimum of 100% of the NRV is necessary.

Sufficient amount of biotin or vitamin B6

Biotin is the B-group vitamin most important in the “production” of hair, so its presence is essential in a dietary supplement for hair beauty.

I favored brands that provide between 100% and 400% of the NRVs. Some brands offer much higher concentrations, but that is not a quality criterion. 

Indeed, there is no point in overdosing biotin because, in excess, it is eliminated  in the urine. 

Absorption of active ingredients

I based my assessment on the bioavailability of the active ingredients present in the formula. 

For zinc, zinc bisglycinate is preferred because it is the most absorbable form. Zinc citrate has moderate absorption, while zinc oxide is much less well absorbed by the body. 

For vitamin B, the D-biotin form is bioactive and well absorbed by the body.

For keratin, a hydrolyzed form is preferred as it optimizes the absorption of the amino acids that make it up.

Presence of keratin or amino acids specific to its production

Keratin is the protein that makes up 95% of hair. Providing it as a dietary supplement ensures all the amino acids necessary for hair formation. It’s a plus that I highlighted in the ranking.

I was also attentive to the presence of amino acids specific to keratin synthesis such as cystine or methionine, traditionally used to strengthen hair or promote its growth. However, no serious study can confirm their effectiveness.

Presence of plant extracts

Plant extracts are interesting when they are a source of silica, but also for activating microcirculation at the hair bulb, helping to optimize hair growth and nutrition.

This is an important point to improve growth and naturally boost hair strength.

2. Safety

To assess the product’s safety, I mainly relied on 3 criteria.

Presence of additives

I favored brands that provide the minimum food additives, whether they are controversial or not. 

Presence of controversial additives

The presence of controversial additives such as talc or other nanoparticles was severely reflected in the score for this category. 

Quality certificate freely available on the website

To me, this shows exemplary transparency and often very good quality. It is extremely reassuring for the consumer. 

Country of manufacture

I favored French manufacturing, with a focus on local production and because regulation is important. 

3. Reputation and trustworthiness of the brand

To assess the trustworthiness and reputation of the brand, I relied on various criteria: 

• The company’s founding date because longevity is often a sign of quality 
• Its reputation on social media such as Instagram and the number of followers 
• Reviews on review sites such as Trustpilot or Avis Vérifiés
• The responsiveness of customer service: I sent each brand a list of questions, which allowed me to evaluate the speed and accuracy of the responses provided

Frequently asked questions (FAQ)

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Bibliography

Test E551 Silicon dioxide (amorphous), Silica (amorphous), Published October 23, 2018, quechoisir.org

Ralph M Trüeb, MD, 2016. Serum Biotin Levels in Women Complaining of Hair Loss.