Read the instructions and warnings carefully through to the end before using. Apply the product on dry hair previously cleaned with the pre-treatment shampoo. Start 1 cm from the scalp towards the ends. IMPORTANT: avoid contact with the scalp skin. Comb through, make sure that all the hair is saturated with the product. Developing time for dyed hair is 40 min for thin hair and 60 min for thick hair. Rinse the hair with lukewarm water after developing time has elapsed. Make sure that there is no product remaining on the hair. Blow dry the hair 100% and start flat ironing. The number of iron passes and iron temperature depends on the hair structure. For fine colored hair make 8 passes with an iron temperature of 180 – 200°C, for thick colored hair make 10 passes at 200 – 220°. TURBO LISS PRO TITANIUM iron is recommended for the best performance as the number of passes can be reduced to 3-5 passes for the thin hair and 5-6 passes for the thick hair. IMPORTANT: If you see that the blond hair turns yellowish, reduce the iron temperature.