Biotin is one of the B vitamins. It is involved in a wide range of metabolic processes, both in humans and in other organisms, primarily related to the utilization of fats, carbohydrates, and amino acids. Biotin injections are used for the improvement of fine, fragile, or thinning hair. Biotin is a type of B complex vitamin. Although biotin occurs naturally in various foods, people suffering from a deficiency usually have a genetic issue that prevents them from fully absorbing this nutrient. Biotin plays a major role in the natural hair manufacturing process. it is essential to not only grow new hair, but it’s also crucial in improving the overall health of your hair, also.