Biotin, also known as vitamin B8 (or vitamin H) , is a water-soluble B vitamin that plays an important role in energy production, metabolism, and the health of skin, hair, and nails . It is essential for the conversion of nutrients into energy and contributes to the formation of keratin , the main protein in hair and nails.

Biotin is found naturally in foods such as eggs, nuts, seeds, whole grains, and liver . A deficiency of biotin can lead to brittle nails, hair loss, dry skin, and fatigue . Biotin supplementation is often used to promote hair growth, strengthen nails, and keep skin healthy .

This broad action makes biotin a popular supplement for people who want to strengthen their hair, skin and nails and support their energy .