The Douzi Small Molecule Collagen Solid Drink is a convenient all-in-one product designed to promote hair, skin, and nail health. With a formulation of Vitamin C and Biotin, this drink offers a potent blend of active ingredients in a volume of 120ml per piece. This product, weighing 120g, is a great addition to any beauty regimen looking to enhance overall health and appearance. With free shipping included, it's a convenient and effective way to nourish your body from the inside out.