OUR #1 SERUM Our most potent serum yet. The culmination of 150 years of Japanese skincare innovation, NEW Ultimune face serum delivers 2x skin‘s defense** with ImuGenerationRED Technology™. Vital flowing nutrients are fed to the skin, visibly reducing signs of aging, amplifying hydration, and boosting radiance in 3 days*. Now available in a refill size. *Tested by 104 women **Based on the improvement of moisture retention rate and transepidermal water loss Power in Each Drop Boosts radiance in 3 days* BENEFITS: Visibly reduces signs of aging Amplifies hydration Boosts radiance in 3 days Enhances the efficacy of other skincare products Dermatologist-tested. Non-comedogenic.