A vitamin that links beauty and wellbeing

What is Biotin?

Biotin, also known as Vitamin B7 or Vitamin H, is a real all‑rounder when it comes to beauty and wellbeing. It belongs to the group of B vitamins, is water‑soluble and plays a central role in the body. Biotin is particularly known for its positive effects on skin, hair and nails. It supports a healthy appearance, promotes tissue regeneration and can counteract brittle structures.

But that's not all. It also helps internally, as it is involved in important metabolic processes and helps the body to utilise fats, proteins and carbohydrates efficiently. Even elevated cholesterol levels can be positively influenced by biotin.

What effect does Biotin have on the body?

Biotin is far more than just a “beauty vitamin”. It is an indispensable helper for numerous processes in the body. As part of the energy, fat and carbohydrate metabolism, it ensures that nutrients are used optimally. It works deep within our cells, supports cell growth and helps repair DNA damage.

Biotin also has visible external effects. It supplies the skin via the sebaceous glands with protective lipids and helps to stabilise the natural moisture balance. This contributes to a healthy, smooth complexion and can even reduce the appearance of early dryness lines. The effects of biotin are particularly noticeable with increasing age or during menopause, when the skin becomes more sensitive and drier.

Hair and nails also benefit. Biotin strengthens their structure and promotes growth — from the inside out. It is therefore no surprise that many cosmetic products and supplements rely on this versatile vitamin.

Biotin for hair loss: does the vitamin really help?

The answer is nuanced. Biotin does play an important role in the health of hair, skin and nails, but only if a true deficiency exists. According to current studies, additional intake in the form of tablets or capsules does not provide a demonstrable benefit for hair growth if there is no biotin deficiency.

For people who actually absorb too little biotin due to genetic factors, certain medications or illnesses, the situation is different. In such cases, targeted supplementation can stop or at least reduce hair loss.

It is important to know that hair loss can have many causes, for example iron deficiency, hormonal changes, stress or thyroid problems. Anyone experiencing excessive hair loss should have the cause checked by a doctor rather than taking vitamins at random.

Does Biotin make hair grow faster?

Biotin plays an important role in hair health. It supports the formation of keratin, the main component of hair structure, and thus helps produce strong, resilient hair.

Whether hair actually grows faster as a result is not clearly proven. Scientific evidence is limited and the effect can vary greatly from person to person. If you already have sufficient biotin, increasing intake generally will not produce a “turbo effect” on hair growth.

How long does it take for Biotin to affect hair?

Unlike a quick trip to the hairdresser, biotin does not work overnight; the vitamin exerts its effect deep in the body and needs time to influence hair structure.

Generally, the first visible effects appear no earlier than after about 90 days of consistent intake. Studies show that many users only notice stronger, shinier or more resilient hair after three months. It is important that daily intake is taken consistently — ideally always at the same time — so as not to interrupt the build‑up process.

In which foods is Biotin (Vitamin B7) found?

Biotin occurs naturally in many foods. A balanced diet usually provides a sufficient amount of this “beauty vitamin”. Both plant‑based and animal products supply valuable biotin and contribute to daily intake.

With around 100 micrograms per 100 grams, beef liver is particularly rich in biotin and thus a top source. But there are also great biotin sources for those who follow a plant‑based diet: hazelnuts, soybeans, sunflower seeds and rolled oats also contain significant amounts of biotin and are easy to include in everyday meals.

Other good sources include hen's eggs, mushrooms, spelt bread, brown rice, white beans, lentils and dairy products such as quark and cottage cheese. Whether in muesli, salad or a savoury meal — with the right choices you can easily meet your biotin needs and at the same time do something good for your skin, hair and nails.

Are there side effects from taking Biotin?

Biotin is generally considered very well tolerated, as it is water‑soluble and excess amounts are simply excreted in the urine. At usual doses, taking biotin is not expected to cause side effects.

At very high doses, however, skin rashes, digestive problems or allergic reactions can occur in rare cases. Excessive biotin intake can also affect certain laboratory values. In particular, immunological tests can yield distorted results.

Therefore it is advisable to stick to the recommended daily amount and, if in doubt, seek medical advice. This applies especially if medications are already being taken or regular blood tests are required.

Biotin: how skin, hair and nails really benefit

• Rely on biotin‑rich foods. Regularly include nuts, eggs, oats or mushrooms in your diet. These foods are natural and readily available sources of biotin. This way you reliably supply your body with the vitamin without extra supplements.
• Support hair and nails from within. If you notice brittle nails or limp hair, biotin can help. It promotes keratin production and thus strengthens structure. Nails become more resilient and hair more lustrous.
• Recognise early signs of deficiency. Watch for redness, scaly patches or inflammation at the corners of the mouth — these are possible warning signs. Oily skin with yellowish scales can also indicate a biotin deficiency. The earlier you react, the sooner symptoms can be alleviated.
• Prevent neurological consequences. A prolonged biotin deficiency can cause not only external but also neurological symptoms. These include fatigue, depressive moods or tingling in the arms and legs. If you experience such symptoms, seek medical advice without delay.
• Know your daily requirement. Adults are advised to take about 40 µg of biotin per day. This amount can be easily achieved with a balanced diet. More is not necessarily better — overdosing provides no extra benefit.
• Pay attention to biotin intake during pregnancy and breastfeeding. Your biotin needs are increased during these stages. Be particularly mindful of a biotin‑rich diet and discuss possible supplementation with your doctor. This ensures both you and your child are well supplied.
• Choose biotin products selectively. Creams containing biotin can soothe dry or sensitive skin. Combined with ingredients such as glycerin or collagen, the vitamin has a particularly nourishing effect. This helps strengthen your skin barrier from the outside as well.
• For hormonally induced acne, biotin does not act directly. Other actives like salicylic acid or niacinamide are significantly more effective. In such cases, use biotin more as a general skin‑care support.
• Combine biotin with trace elements such as zinc and selenium. While biotin stimulates keratin production, zinc and selenium act as antioxidants and anti‑inflammatories. This achieves a holistic care effect.
• Maintain consistent intake. If you take biotin as a supplement, patience is required. Visible changes to skin, hair or nails often only appear after 8–12 weeks. Consistency is crucial to success.
• If you're unsure whether you're getting enough biotin, get a blood test. Your doctor can tell you precisely whether a supplement is necessary. This helps you avoid both deficiency and unnecessary overdosing.

Biotin is much more than a “beauty vitamin” — it supports numerous processes in the body and at the same time contributes to healthy skin, strong hair and stable nails. Those who eat a balanced diet usually meet their needs automatically, without extra supplements. Nevertheless, it is worth keeping an eye on biotin, as it is an indispensable building block for vitality and wellbeing.