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Best biotin supplements for women 2026, tried and tested

From high-strength biotin tablets to all-round hair, skin and nail formulas, we’ve tested the best biotin supplements for women in 2026, with options to suit different needs and budgets.

Published: September 4, 2026 at 11:35 AM

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Biotin, also known as vitamin B7, is an essential nutrient that helps support healthy hair, skin and nails, including by helping your body produce keratin.

Pregnancy and the first months after having a baby can bring plenty of changes to your body, too – and your hair, skin and nails don't always escape them. While some women find their hair feels fuller during pregnancy, postpartum shedding can be a very different story.

You'll find biotin naturally in foods including eggs, nuts and seeds, but if thinning hair or brittle nails are bothering you, you might be wondering whether a supplement could help. Biotin supplements come in capsules and tablets, with different strengths and, in some cases, additional nutrients such as zinc or selenium. If you're pregnant, breastfeeding or taking a prenatal or postnatal vitamin, check with your midwife, GP or pharmacist before adding a separate supplement.

We put these biotin supplements to the test to help you compare the different options, from affordable everyday tablets to more comprehensive hair, skin and nail formulas.

For more expert-reviewed options, see our guides to the best hair, skin and nail supplements, best sleep supplements for adults, best collagen supplements for women over 30, best pregnancy vitamins and supplements and best fertility supplements and prenatal vitamins.

Best biotin supplements at a glance

How we tested biotin supplements All supplements were tested within the same time period, with observations recorded using consistent testing criteria. We tested products from a range of manufacturers, including capsules and tablets at different price points. We looked at taste and flavour, nutrient profile, additives, suitability for different dietary requirements and value for money based on cost per day.

Best biotin supplement overall

Solgar Biotin 5000mcg, from £15.49

Best for: Overall

Solgar Biotin

Why we chose it: This easy-to-take supplement delivers 5000mcg of biotin per capsule, with no noticeable taste or smell.

What we like

What to keep in mind

With a 5/5 rating, this was the standout performer in our test. The capsule format is fuss-free and easy to fit into a daily routine, with no noticeable taste or smell to contend with.

Available from: Amazon (£15.49), Solgar (£24.53)

Best biotin supplements for different needs

Natures Zest Biotin Complex, £19.99

Best for: High-strength biotin

NaturesZest Biotin

Why we chose it: Each tablet contains 10,000µg of vitamin B7 in a vegan-friendly formula with no artificial colours or preservatives.

What we like

What to keep in mind

Each bottle contains 120 tablets, with one designed to be taken each day. It's a straightforward option if you're specifically looking for a high-strength biotin supplement, and the formula is intended to support normal hair and skin as well as energy-yielding metabolism and nervous system function.

Available from: Natures Zest (£19.99), Amazon (£19.99)

New Leaf Biotin, Zinc & Selenium, from £8.97

Best for: Zinc and selenium

New Leaf Biotin

Why we chose it: As well as a high dose of biotin, the daily serving provides all of your daily selenium requirement plus 50% of the zinc reference intake.

What we like

What to keep in mind

If you'd prefer a supplement that combines biotin with zinc and selenium rather than biotin on its own, this is a practical, budget-friendly choice. At 12p per day, it's also one of the lower-cost options we tested, with further savings available through the subscription option.

Star rating: 4/5

Available from: Amazon (£8.97), New Leaf (£10.95)

Cytoplan CytoProtect Hair, Skin & Nails, £44.99

Best for: Antioxidant blend

Cytoplan Biotin

Why we chose it: This combines biotin, zinc and selenium with antioxidants in a formula specifically designed to support healthy hair, skin and nails.

What we like

What to keep in mind

The broader nutrient profile makes this one to consider if you're looking for more than biotin alone. We found the capsules easy to swallow, although their fairly strong smell may be worth bearing in mind if you're particularly sensitive to smells.

Star rating: 4/5

Available from: Cytoplan (£44.99)

BioCare Hair, Skin & Nail Complex, £38.35

Best for: All-round complex

BioCare Biotin

Why we chose it: A good all-rounder combining biotin and zinc with a wider mix of vitamins, minerals and antioxidants.

What we like

What to keep in mind

If you're looking for an all-round hair, skin and nail supplement rather than biotin on its own, this is one of the most comprehensive options we tested. The downside is the cost, particularly when compared with some of the simpler supplements in our round-up.

Available from: BioCare (£38.35), Victoria Health (£38.35)

Nutrition Geeks Biotin Growth+, £6.99

Best for: Value

Nutrition Geeks Biotin

Why we chose it: At £6.99 and 11p per day, this combines biotin with zinc and selenium at one of the lowest costs in our selection.

What we like

What to keep in mind

If you're keeping an eye on cost, this is a particularly wallet-friendly option. The small tablets were easy to take and had no noticeable taste or smell, while subscription discounts can bring the price down further.

Available from: Nutrition Geeks (£6.99), Amazon (£6.99)

Perfectil SKIN, from £18.95

Best for: Multi-nutrient skin formula

Perfectil Biotin

Why we chose it: This combines a range of nutrients with omega-3 and antioxidants in a clearly organised daily tablet-and-capsule format.

What we like

What to keep in mind

The days-of-the-week packaging is a handy touch that makes the two-part daily routine easier to keep track of. However, this may not be the best match if you struggle to swallow larger tablets or are particularly sensitive to smells.

Star rating: 3.5/5

Available from: Vitabiotics (£18.95), Amazon (£18.95), Boots (£19)

Biotin supplements: what you need to know

Is biotin safe to take during pregnancy?

Biotin is an essential nutrient during pregnancy, but that doesn't mean more is necessarily better – particularly when it comes to the high-dose supplements marketed for hair, skin and nails.

A controlled feeding study published in The Journal of Nutrition reported differences in several markers of biotin metabolism in pregnant, breastfeeding and non-pregnant women, with the researchers concluding that pregnancy and lactation may increase biotin requirements. [ADD SOURCE LINK]

However, this isn't a reason to automatically reach for a high-strength beauty supplement. Some of the products in this round-up contain 5,000 to 10,000mcg of biotin, far higher than the amounts needed nutritionally.

Another important consideration is that high levels of supplemental biotin can interfere with certain laboratory tests, potentially producing misleading results. These can include some hormone, thyroid and troponin tests. [ADD AUTHORITATIVE SOURCE LINK]

If you're pregnant and already taking a prenatal vitamin, check how much biotin it contains before taking anything else so you're not inadvertently doubling up. Speak to your midwife, GP or pharmacist before taking a standalone biotin or beauty supplement during pregnancy, particularly a high-dose product, and make sure healthcare professionals know you're taking biotin if you're having blood tests.

What about biotin while breastfeeding?

The same controlled feeding study found differences in biotin metabolism in breastfeeding women compared with non-pregnant, non-breastfeeding women, with researchers suggesting that lactation may increase dietary biotin requirements. [ADD SOURCE LINK]

That doesn't establish that high-dose biotin supplements are necessary or beneficial while breastfeeding, however. If you're breastfeeding and considering a supplement, particularly alongside a postnatal vitamin or multivitamin, speak to your GP, midwife, health visitor or pharmacist about what's appropriate for you.

Does biotin help hair growth?

Biotin plays a role in maintaining normal hair, but taking extra biotin doesn't necessarily mean you'll see faster or thicker hair growth if you're already getting enough.

This is particularly worth remembering if you're experiencing postpartum hair shedding. Hair changes after birth are common, and reaching straight for a high-dose beauty supplement isn't necessarily the answer. If you're worried about the amount of hair you're losing, or hair loss is persistent or accompanied by other symptoms, speak to your GP or health visitor.

Is biotin good for skin and nails?

Biotin contributes to the maintenance of normal skin, while some small studies have explored supplementation in people with thin or brittle nails. However, that doesn't mean taking a high-dose biotin supplement will necessarily transform your skin or nails if you're already getting enough.

How long does biotin take to work?

There's no guaranteed timeframe for seeing a noticeable change after taking biotin, and results will vary depending on factors including whether you were deficient in the first place. Hair and nail changes can also have many causes, particularly during pregnancy and the postpartum period.

How much biotin should I take per day?

In the UK, the NHS says you should be able to get all the biotin you need by eating a varied and balanced diet. It also advises that taking 0.9mg or less a day in supplements is unlikely to cause harm.

It's important to put that figure into context when shopping for biotin, as some beauty supplements contain several thousand micrograms per dose. If you're pregnant, breastfeeding, taking other supplements or having medical tests, speak to a healthcare professional before taking a high-dose product.

How should I take a biotin supplement?

Before adding biotin to your routine, check the labels of any multivitamins, prenatal or postnatal supplements you're already taking. This will help you spot duplicated nutrients and understand your total daily intake.

If you're pregnant or breastfeeding, check with your midwife, GP or pharmacist before taking a new supplement.

What type of biotin is best?

Rather than choosing purely on the biggest number on the label, look at the overall formula, dosage, additives, dietary suitability and how easily the supplement will fit into your routine. A higher dose isn't automatically a better choice.

Can you take biotin and collagen together?

Biotin and collagen are often combined in supplements marketed for hair, skin and nail health. If you're considering taking multiple supplements, check their ingredient lists carefully to avoid unintentionally doubling up on nutrients. If you're pregnant or breastfeeding, discuss any supplements with your healthcare professional first.

What we looked for in biotin supplements

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Authors

Ruairidh PritchardDigital Growth Lead

Ruairidh is the Digital Lead on MadeForMums. He works with a team of fantastically talented content creators and subject-matter experts on MadeForMums.

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