Immediately hydrate skin with this long-lasting, full circle serum. Kick-start skin’s hydration cycle for more supple, resilient skin that deeply hydrates for 10+ hours and increases hydration levels over time. *Independent clinical test, 30 subjects, 2 applications/day, 28 days. Hydration measurements taken via corneometer before application and at 20 minutes, 2 hours, and 10 hours