Maxi-Hair Plus Skinand Nails by Country Life is an all-in-one biotin-based hair supplement designed to help you look and feel your best. This formula bolsters the body's supply of biotin, which supports the formation of keratin, a building block for hair, scalp, skin, and nails. The addition of botanicals, amino acids, and vitamins/minerals helps to support skin and nail health from the inside out.