Neutrogena Cellular Boost Rejuvenating Day Cream SPF 20 50ml Discover a skincare product that visibly reduces signs of aging skin in just four weeks. The Neutrogena Cellular Boost s SPF 20 rejuvenating day cream fights against skin aging caused by burnt-out cells. The most common causes of this are UV radiation, air pollution, and stress. The formula combines the rejuvenating technology Hexinol™ with vitamin C, which helps increase the skin’s firmness and elasticity and promotes the skin’s restorative processes. Neutrogena Cellular Boost helps create an even skin tone without visible dark spots.