Along with supporting the health of the nails and skin, biotin also contributes to healthy hair growth. This is because biotin is involved in the process of protein synthesis—and the production of keratin, more specifically—within the body.11
So, the answer to the question of whether biotin is good for your hair is a simple one: yes, it is. However, the issue of whether you should supplement your intake of biotin is a bit more complicated.
It might seem to follow that, as biotin is good for your hair, taking a biotin supplement would help you achieve the enviable locks of your dreams. Unfortunately, this might not be the case. As previously mentioned, most people get enough biotin in their diet, and there is insufficient evidence to conclusively prove that then supplementing with biotin is beneficial.
On the other hand, hair loss and thinning hair are both potential symptoms of deficiency, for which a good dose of biotin might be (literally) just what the doctor ordered. Though certain groups of people are more susceptible to deficiency, it’s important to remember that biotin deficiency is rare in the U.S., and that hair thinning and loss can both be caused by other conditions.
