Single Use Set 2-step system contains both straightener and neutralizer Shiny, smooth and silky straight hair for up to 2 months Shiseido Crystallizing Japanese Hair Straightening is an innovative new technique from Japan to make frizzy, curly or wavy hair completely straight while preserving the hair's health. In the past, people were concerned that if they straightened their hair, they would damage it significantly, and this was true. But it is not true anymore! Hair can be straightened much more effectively with the Japanese Shiseido Crystallizing techniques with much less damage to the hair. Suitable for men and women. To make frizzy, curly or wavy hair completely straight while preserving the hair's health. This 2 step straight permanent system contains both straightener and neutralizer. Permanent solution to be used with a hot hair iron to make your hair smooth, shiny and straight. Set includes Straightener 125g (4.4 oz) and Neutralizer 125g (4.4 oz) Instructions: Shampoo hair and dry your hair thoroughly. Apply the straightener all over the head of hair, except for the roots, keep it 1 to 2 cm above the roots. Coat the entire hair evenly and comb straight through with a wide-toothed comb. Let it set at room temperature for 10 to 20 minutes. Then, after sufficiently plain rinsing, dry the hair thoroughly. Set it with a special iron at 180C / 360F or less for 2 seconds per location to straighten the hair. When applying Straightener, keep it 1 to 2 cm above the roots, as getting it on the scalp could cause irritation hair for breakage. Use an intermediate water rinse to completely wash away straightener. Especially wash the roots carefully. Neutralizer: Coat the entire hair and leave it for 2 to 3 minutes while lightly combing. Then, completely wash it away. If the neutralization is not complete, it could cause damage or hair for breakage, so coat the hair sufficiently from the roots to the tip of the hair to make sure neutralization is complete. Made in Japan. Labeled for sale in Thailand