The core of Circadia’s concept is chronobiology, the science of defending the skin from environmental damage during the day, and stimulating internal repair mechanisms during sleep. Circadia harnesses nature and science through the skin and body’s natural circadian rhythms, producing healthy, beautiful skin. In collaboration with experienced estheticians and scientists, we harness the science of circadian rhythms in our product development, giving you proprietary formulations that provide unrivaled results. All products are paraben-free, SLS-free and fragrance-free.