Vitamin B7 also known as Biotin is an essential nutrient and is used by the boat to metabolize fats, amino acids and carbohydrates. It is considered to be one of the building blocks of protein. Most commonly, Biotin is used to strengthen the hair and nails as well as to keep your liver, eyes, skin and nervous system healthy. Biotin can be especially helpful to people who suffer from a condition which causes hair loss, called alopecia. This vitamin may greatly aid with hair growth and reduction of inflammation in the scalp. Poor hair growth and hair thinning are often associated with a Biotin deficiency.