Dermalogica Smart Response Serum Jumbo 59mlhydrates, brightens, soothes Next gen smart serum delivers what your skin needs, when it needs it. SmartResponse technology helps stop skin damage before it starts using four smart actives which, when triggered, hydrate, brighten, soothe, and address the appearance of fine lines and wrinkles in response to skins changing needs. Oligosaccharides from hydrolyzed Beta Glucan respond to dehydration signals, helping skin to maintain optimal hydration