LE – Hair Growth Cycle(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 - Structure and Functions of the skin(KCBT) LE - Methods of eyelash extension(KCBT) Back to: Lash Extensions(KCBT) > CLE - Manual (KCBT)