This lightweight, fast absorbing serum provides intense hydration for my skin and rejuvenation through the power of hyaluronic acid. It's definitely a hydrating power house that will quench and revitalize thirsty skin for longer lasting moisture retention and skin health. Let that sink in. I love that it has 2 types of grape stem cells that brighten and balance my skin complexion and have probiotics and black tea ferments to help plump and soften my skin. I definitely use this day and night. I recommend this product!