Collagen is one of the things that gives skin its plumpness, hair its density, and nails their strength. A depletion in collagen levels has been linked to everything from the development of wrinkles to thinning hair—however, consuming a collagen peptide powder can help support the overall health and appearance of your hair, skin and nails. Dose & Co products have been scientifically shown to increase skin hydration, improve skin elasticity and reduce fine lines and wrinkles.