Base coats to carry out the first 2 STEPS of KyLua professional semipermanent system. For the first STEP use BASE 1 (UV/LED adhesion optimizer), for the second STEP choose between BASE 2, RUBBER, FILLER or FIBER FILLER according to your needs. Available in various types: transparent, milky, cover and with polymeric fibers. They are suitable for removal Soak-Off technique except Fiber Filler which is removed with light filing. Guaranteed to last up to 3/4 weeks.