LE – Lash Extensions Theory Exam(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 - Trolley Setup(KCBT) LE - Practical Documents(KCBT) Back to: Lash Extensions(KCBT) > CLE - Lash Extension Theory Exam (KCBT)