LE – Safety and Sanitisation(KCBT) You must first complete LE – What are Classic Eye lash extensions?(KCBT) before viewing this LessonPlease sign up for the course before starting the lesson. LE - Health and Hygiene(KCBT) LE - Structure and Functions of the skin(KCBT) Back to: Lash Extensions(KCBT) > CLE - Manual (KCBT)