biotin

Biotin, also known as Vitamin B7 or Vitamin H, is a water-soluble vitamin in the B-vitamin family. It is an essential nutrient, meaning the body cannot make enough on its own, so you obtain it through diet or supplements. Think of it as a key player in metabolism—a coenzyme that helps carboxylase enzymes work properly and process fats, carbohydrates, and proteins so your body can use energy.

While crucial for overall health, biotin is most often linked to healthy hair, skin, and nails. Deficiencies are relatively rare because it appears in many common foods, but when they occur, symptoms can include hair loss, brittle nails, scaly skin rashes (especially around the eyes, nose, and mouth), and sometimes neurological signs.

This nutrient is important beyond human health as well, often in animal feed formulations. Some bacteria in the gut can produce biotin, but this does not usually provide a major source of it. Still, certain medications and health conditions can reduce absorption, making supplements useful for some people. Whether you're focusing on balanced nutrition, metabolic support, or stronger hair and skin, this vitamin quietly supports many body systems.