What is in Biotin? Biotin is a water-soluble micro nutrient found in certain foods and is also known as Vitamin B7 or Coenzyme R. Converting food into energy is the main benefit from biotin. Biotin promotes appropriate function of the nervous system and is essential for liver metabolism. It helps the body metabolize carbs, proteins and fats. How to benefit from biotin depends on some important lifestyle factors and overall health. Biotin can be consumed by way of certain foods or by taking a supplement. Biotin has been used to help with improving thinning hair, weak nails and problematic skin but please note there isn’t much research around the subject. The research is limited.