LL – Structure and Functions of the skin(KCBT) You must first complete LL – What is Lash Lifting / Perming?(KCBT) before viewing this LessonPlease sign up for the course before starting the lesson. LL - The Causes of Hair Growth(KCBT) LL - Health and Hygiene(KCBT) Back to: Lash Lift Course(KCBT) > LL - Manual (KCBT)