Sérum Yall ~ O2 is one of our richest finishing serums, restoring volume and firmness to the skin. It revitalizes and redefines the surface of the skin and lips while forming a protective film. Enriched with hyaluronic acid and marine collagen, it combats dehydration and signs of aging by reducing the size and depth of lines and wrinkles. This serum provides a super luxurious finish to your skincare routine.