Professional level moisturization with hyaluronic acid, which can hold a thousand times it's weight in water. It is one of the strongest most powerful moisturizers known to science. This Serum is also packed full of other powerful antioxidants and age Busters. Deeply hydrates, plump skin back up relieving crepiness, goes to work on your fine lines and wrinkles and does a great job of tightening and Firming your skin. All of these things won't happen overnight, but they will happen. I received this serum in exchange for trying it out and reviewing its quality and performance period like other products from this company, they work for me. They also don't irritate my sensitive skin.