Whether you’re exploring biotin for the first time or after an upgrade of your current supplement, our recommendations will help you make an informed decision to support your beauty and wellness goals.
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How we tested biotin supplements
All supplements were tested within the same time period, with observations recorded based on the testing criteria. We included samples from various manufacturers, offering diverse formats such as capsules, tablets, gummies and soluble offerings, with a range of price points to suit different budgets. The key areas we assessed were as follows:
- Taste and flavour: is the consuming experience pleasant?
- Nutrient profile: how much biotin per daily dose? How does this compare to the NRV?
- Additives: does the product contain additives, for example: preservatives, artificial sweeteners or colourings?
- Dietary requirements: does the product meet any specific dietary needs– is it vegetarian, vegan?
- Value for money: how does it compare to other products on a cost-per-day basis
Best biotin supplements at a glance
- Solgar Biotin 5000 mcg, £24.53
- Paused Beauty Complex, £19.99
- Nutrition Geeks Biotin Growth+, £9.99
- Biocare Hair, Skin & Nail Complex, £38.35
- Cytoplan Hair, Skin & Nails, £24.49
- New Leaf Biotin, Zinc & Selenium, £8.97
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Best biotin supplements to buy in 2025
Solgar Biotin 5000 mcg
Available from Amazon (£16.54), Solgar (£24.53)
Price per day: 45p
Star rating: 5/5
With 5000 mcg per capsule, these biotin supplements provide more than your recommended intake but at a fairly decent price. There’s no noticeable taste or smell and they’re easy to take. Testers felt these capsules would fit easily into a daily supplement regime.
Available from:
Paused Beauty Complex
Available from Paused (£19.99), Boots (£19.99)
Price per day: 67p
Star rating: 5/5
Paused’s Glow offers a comprehensive blend of nutrients: 200µg biotin (that hits 400% NRV) with hyaluronic acid, grape seed, resveratrol, CoQ10, vitamins, minerals and botanicals such as Japanese knotweed. The capsules are easy to take, have no noticeable taste and are suitable for vegans. Packaging is simple and convenient, and it’s free from GMOs and gluten, making it a solid all-rounder for daily beauty support.
Available from:
Nutrition Geeks Biotin Growth +
Available from Nutrition Geeks (£6.99), Amazon (£6.99)
Price per day 11p
Star rating 4.5/5
For a general biotin supplement with some zinc (helps maintain healthy skin, hair and nails) and selenium, this is a good basic supplement and best value for money. There are bigger discounts available if you buy on subscription, and the product has small, easy-to-swallow tablets with a neutral taste and smell.
Available from:
Biocare Hair, Skin & Nail Complex
Available from BioCare (£38.35), Victoria Health (£38.35)
Price per day £1.25
Star rating 4.5/5
A good all-rounder, this product contains a good blend of biotin and zinc together with other vitamins, minerals and antioxidants. The dose is two capsules a day, which are easy to swallow and tasteless but a few of the testers did comment on a slight grassy smell. There are no additional fillers or additives.
Available from:
Cytoplan CytoProtect Hair, Skin & Nails
Available from Cytoplan (£24.49)
Price per day 38p
Star rating 4/5
This is a blend of biotin, zinc and selenium as well as important antioxidants specifically formulated to support healthy hair, skin and nails. They are easy-to-swallow capsules, but some testers found that they do have quite a strong smell which may be off-putting for some.
Available from:
New Leaf Biotin, Zinc & Selenium
Available from Amazon (£8.97), New Leaf (£10.95)
Price per day 12p
Star rating 4/5
This biotin supplement has really small easy-to-swallow, tasteless tablets and delivers a high dose of biotin in just two tablets a day. It provides all your daily selenium requirements, plus 50% of your zinc reference intake. You can buy on subscription and receive a discount, making it good value too.
Available from:
Is biotin good for skin?
There are limited studies on the benefits of biotin in skin health, unless you happen to have a biotin deficiency. In fact, there is some concern about the levels of high dosing that can be found in some products as high levels of biotin may interfere with thyroid function. A few small studies demonstrate that when people with thin and brittle nails took high doses of biotin it did have a positive effect.
Is biotin good for hair?
Like with skin health, there also appears to be limited scientific evidence about the effectiveness of biotin for hair health, and any beneficial studies appear to be in those who had a biotin deficiency.
How much biotin should I take per day?
There is no recommended daily allowance for biotin in the UK, because there isn’t enough evidence, and the NHS supports that we should be able to get enough from our diet. Their recommendation is to take 0.9mcg or less without any side effects, but there is also some evidence that supports 30mcg a day for adults being safe, and even higher levels have currently not been found to cause toxicity.
How should I take a biotin supplement?
No single nutrient works on its own, so if you are going to take a biotin supplement, look for one that has other vitamins and minerals as well to maximise efficacy. The standard recommendation is to take biotin supplements with food, and plenty of fluid; the time of day is not thought to be important.
What format of biotin is best?
There is some evidence that liposomal formats may provide better nutrient uptake, but as tablets and capsules tend to contain more nutrients, it might be wise to look for one of these rather than a liposomal format which may have fewer nutrients.
More biotin supplements tested
Further reading
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What foods are good for my skin?
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Liz Earle’s top five secrets for radiant skin
What to eat for healthy hair
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