Is Biotin the answer to my thinning hair? Biotin is a B vitamin often recommended for hair health.  Biotin has many claims that if taken in a pill form or used in hair products, it can thicken hair, stimulate hair growth, and give you healthier nails and skin. Biotin is an essential vitamin. What that means is that your body needs this micronutrient to function properly. The biotin you consume in foods helps your body to turn the food you eat into energy. Unfortunately, there