Advanced anti-aging serum offers a daily-dose of anti-aging defense. The RxSeries combines breakthrough anti-aging ingredients with natural PureScience technology to create the ultimate performance products with proven results. The silky liquid texture is readily absorbed allowing for immediate delivery of the efficacious ingredients below the skin s surface. Serums are intended to be used with a moisturizer or blended with another product. It is the ideal companion to any of our moisturizers or Post Shave Cooling Gel. Except for customers with oily skin, serums are not intended to provide adequate hydration when used alone. Uses certified organic ingredients with no fragrance, parabens or colorants. Dermatologist tested.