Apply to dry hair, do not shampoo before use. Recommended application base: Dark blonde 6-0 and lighter, with 30-70% white hair. Prepare BLONDME Lift & Blend and BLONDME Premium Developer in equal parts 1:1. Recommended developer concentration: 12%|40 Vol. for levels 6-0 and 7-0, 9%|30 Vol. for levels 8-0 and lighter. Always mix BLONDME Lift & Blend and BLONDME Premium Developer thoroughly until a homogeneous cream is achieved. Apply the mixture immediately after preparation. Use plenty of product to ensure best possible white blending and lifting effects. Development time: 30-45 minutes. Additional heat is NOT recommended.