Natrol Biotin 10,000 mcg is a high-potency "beauty from within" supplement that supports healthy hair growth, radiant skin, and stronger nails. Biotin, also known as Vitamin B7, plays a critical role in energy metabolism by helping convert food into cellular energy. The Fast Dissolve technology is perfect for those who have difficulty swallowing pills; the tablet dissolves up to 30 times faster than regular tablets and features a delicious natural strawberry flavor.