Biotin Benefits: Hair, Skin, Nails & Metabolism | Ultimate Guide Introduction Biotin, also known as Vitamin B7, is a water-soluble vitamin that plays a crucial role in various physiological processes. It is part of the B-vitamin complex and is essential for metabolism, energy production, and maintaining healthy hair, skin, and nails. Despite being naturally present in many foods, biotin has gained immense popularity as a supplement due to its perceived benefits. This article explores the science behind biotin, its health benefits, dietary sources, supplementation, deficiency risks, and potential side effects. What is Biotin? Definition and Chemical Nature Biotin is a water-soluble vitamin that belongs to the B-complex family. It functions as a coenzyme in various metabolic processes and plays a vital role in the breakdown of macronutrients. Chemically, biotin consists of a ureido ring fused with a tetrahydrothiophene ring, making it structurally unique among vitamins. Role in the ...