Amazing! My skin is NOT dry, yet it was beginning to show signs of dehydration, fine lines. I have combination skin which is often sensitive to many facial products, especially those with fragrance, Vit C and Vit A (retinol). These ingredients tend to cause irritation in the nasal labio folds and marionette line area. After using this product for three weeks, I can report absolutely NO ADVERSE REACTION. I can also report, this serum has greatly improved hydration, those new fine lines disappeared! Although I've always had very small pores, this serum has totally enhanced the texture of my skin. Some small dark spots caused by minor breakouts are beginning to fade. After three weeks, there is no significant change in the marionette lines. I am very hopeful that with continued use, I will see further improvement. This odorless serum is lightweight with a silky texture and absorbs into my skin within one minute. It does not feel greasy or tacky, just noticeably hydrating.