GNC Biotin+ 10,000 mcg is a high-potency biotin supplement designed to support healthy hair, skin, and nails. Biotin, also known as Vitamin B7, plays a crucial role in energy metabolism and helps maintain the health of your hair, skin, and nails. This supplement provides 10,000 mcg of biotin per serving, making it an excellent choice for those looking to enhance their beauty regimen and overall wellness.