The D-Biotin Formula from Biogena is designed to support the function and structure of hair, skin, and nails by providing a highly dosed biotin along with other supportive micronutrients. It contains various micronutrients for skin, hair, and nails, including biotin, zinc, vitamin C, iron, folic acid, and pantothenic acid. These components contribute to maintaining normal skin, hair, and nails, and support the normal formation of collagen for skin functioning. Additionally, zinc is involved in maintaining normal nails, while copper contributes to normal skin and hair pigmentation. This comprehensive formula aims to provide nutritional support for the well-being of hair, skin, and nails.