Per website: Other high-powered ingredients like Retinol, Vitamin C and Exfoliating Acids help reduce the look of signs of aging by acting on top of skin delivering surface-level benefits. Our cushiony, lightweight serum targets the look of aging at the source. + This efficacious barrier-restorative treatment was specially formulated to repair and prepare skin for retinol, Vitamin C, and exfoliating acids, as well as makeup, sunscreen, and environmental stressors. Ideal for pre- and post-procedure including microneedling, laser resurfacing, and peels.