Mid-twenites and up...listen up! It's time to integrate this key ingredient into your nighttime skincare routine... Retinol. Ive been LOVING @kiehls Fast Release Retinol Night Serum for so many reasons...it feels great on my skin and I wake up with a brighter complexion and glowing skin. Retinol penetrates deep into the skin surface to accelerate the cell renewal process, I cant live without it! @kiehls #KiehlsPartner #KiehlsUS #Ad