The amount of biotin recommended for hair growth is usually between 100 and 1,000 micrograms (mcg) per day, but this number varies depending on the body's reaction to biotin. The Food and Drug Administration (FDA) does not have a recommended daily amount of biotin. However, according to estimates, an intake of 30 micrograms (mcg) may be adequate. Research suggests that increasing biotin intake by 2 mg to 5 mg per day could improve hair strength and thickness.
A biotin supplement can help correct a biotin deficiency and restore hair health and growth. There is no solid evidence to support the use of biotin supplements or hair products with biotin added to promote hair growth in people without deficiencies. While the evidence supporting biotin alone for hair growth is weak and limited, the evidence is slightly stronger for preventing hair loss. There is limited evidence to suggest that increasing biotin intake promotes hair growth, but several studies show that it can strengthen hair and help reduce hair loss.
Clinical study: a 3-month randomized, double-blind, placebo-controlled study evaluating the ability of an extra strong marine protein supplement to promote hair growth and reduce hair loss in women with hair perceived as weakening. Using a hair product containing biotin doesn't raise the same concerns, but science doesn't support claims that they can thicken, strengthen, and add shine and volume to hair. Outside of these studies, there is no strong evidence to support taking biotin supplements or using hair products with biotin added to promote hair growth (. However, biotin supplements are only likely to prevent hair loss and promote hair growth in people with biotin deficiency.
Just keep in mind that it's not an approved treatment for hair loss, it can simply help protect and improve the appearance of the hair you already have. People who received the hair growth supplement reported a visible increase in overall hair volume, scalp coverage and thickness after the treatment period. In people with temporary hair loss, studies have shown that supplements containing biotin significantly improved hair growth after 90 days. Stronger hair means less breakage, which, combined with less hair loss, could help your hair look thicker or fuller, even if you don't experience any additional growth.
Because hair loss is sometimes associated with a biotin deficiency, correcting a deficiency with supplements can prevent hair loss in some people. After 3 months, 5 of the patients reported a significant decrease in hair loss, 14 reported a small effect and 3 reported no effect, demonstrating that other factors may also be at play when it comes to hair loss and its prevention. Similarly, many shampoos and conditioners that promise thicker, fuller hair often contain this vitamin B. Hair loss is often primarily considered a male problem, but it's estimated that more than 50 percent of women will experience noticeable hair loss in their lifetimes.
