Strengthens and thickens: Biotin "is well known for its positive effects on hair including growing stronger thicker strands," says Friese. Protects: Because biotin strengthens hair, it is less likely to break off at the ends, promoting and protecting length, explains Friese.
Most of the websites touting biotin for hair growth recommend taking 2-5 milligrams (2,000-5,000 mcg) of biotin in supplement form each day, and many supplements are sold under the name Biotin 5000, indicating a 5000 mcg (5 mg) size.
While biotin is added to some shampoos that claim to reduce hair loss, there is no evidence that this works. Consuming foods rich in healthy vitamins and minerals will help with overall hair health. The best natural sources of biotin are meat, eggs, fish, seeds, nuts, and vegetables.
Biotin. Biotin, also known as vitamin B7, stimulates the production of keratin to increase follicle growth. Biotin deficiencies tend to be rare, with those diagnosed with Biotinidase Deficiency being the most common.
The hair follicles (in any case) must be able to produce new hair. If this is so, it may be possible to restore normal growth and hair thickness." Again, it is possible to get thicker, fuller hair, but it depends on the individual's hair follicles, genetics and overall health – factors that vary from person to person.
During the first couple of months of taking biotin, you may not notice any difference in your hair. It may grow at the same rate as it did before you started the vitamin. But, for many people, it begins to work around the third or fourth month, and that's when the results get encouraging.
After starting a biotin supplement routine, you can expect to start seeing a difference in about three to four months. Results may vary depending on the amount and type of biotin you're taking. You can find biotin at most drug stores and in any vitamin shop.
Side effects of biotin can include trouble sleeping, skin rashes, digestive upset, problems with insulin release, and kidney problems. As with any supplement, the safety of long-term or high-dose use isn't known.
Typically, it takes a few months before the hair becomes longer and stronger. This varies on a case-by-case basis, so it's hard to give an exact figure. One study found that women saw results after 90 and 180 days.
Collagen appears to be a bit more impactful for hair growth than biotin. “Biotin helps provide the key energy needed to power hair production. It is only a part of supporting hair growth,” says Dr. Anzelone.
The bottom line. There's no strong evidence to support using biotin for hair growth or to prevent hair loss in people without a deficiency. Because hair thinning and poor hair growth are sometimes associated with a biotin deficiency, correcting a deficiency can help restore hair growth in some people.
Takeaway. Your body makes enough biotin on its own through your dietary intake each day. Therefore, you shouldn't take biotin supplements unless directed by your doctor. There are some rare health conditions that can cause some people to need biotin supplements on a regular basis.
Excess in the body is rare, and since biotin is a water-soluble vitamin, it is excreted in the urine when in excess. Signs and symptoms of biotin overdose may include and are not limited to insomnia, excessive thirst, and urination.
The Food and Drug Administration (FDA) does not have a daily recommended dietary allowance for biotin. However, according to estimates, an intake of 30 micrograms (mcg) may be adequate. The average intake of biotin in Western countries, excluding the United States, is an estimated 35–70 mcg per day.
The best time to take biotin is in the morning, with a full glass of water. Biotin is best taken on an empty stomach 1 hour before eating or 2 hours after your last meal. You should aim to take biotin at the same time each day to stay on track.
The most commonly recommended time slot to consume biotin supplements is with your morning meal. The water-soluble nature of biotin will ensure that your body is absorbing it with the other nutrients in your meal.
There are various treatment options for female hair loss, including topical medications, such as Rogaine. Other options include light therapy, hormone therapy, or in some cases, hair transplants. Eating a nutritious diet and maintaining a healthy lifestyle can also help keep hair healthy.
A biotin deficiency can often reveal itself in weak facial hair growth or patchy beard growth. Although Biotin is often touted as a wonder hair supplement, but too high a dosage of Biotin can lead to acne, incensed sugar levels, slower release of insulin and skin reactions.
When taken by mouth: Biotin is likely safe for most people when taken in doses up to 300 mg daily for up to 6 months. But it is more commonly used in lower doses of 2.5 mg daily.
Studies suggest deficiencies in vitamins B12 and D, biotin, riboflavin, iron, and other nutrients are associated with hair loss ( 1 ). Eating a balanced diet that is rich in these vitamins and minerals may help promote hair growth, especially if you're experiencing hair loss due to poor nutrition.
In other cases, thinning hair is triggered by something going on inside the body — for instance, a thyroid problem, a shift in hormones, a recent pregnancy, or an inflammatory condition. Hair loss may also be genetic. The most common genetic condition is known as female-pattern hair loss, or androgenic alopecia.