What is skin cycling? Dr. Whitney Bowe @drwhitneybowe , a New York-based dermatologist has been credited with coining the term "skin cycling." According to Bowe, the classic skin cycling routine consists of a four-night schedule. Night 1 - EXFOLIATION, NIGHT 2 - RETINOIDS NIGHTS 3 & 4 - RECOVERY NIGHTS, where you focus on hydration and barrier repair. Once you finish the cycle, you repeat the process. And you keep your Morning routine Same everyday. P.S. - I'll discuss about each nigh