VERY IMPORTANT For professional use, read all instructions warnings prior to buying and using the product. The application process may take 90-150 minutes depending on hair length and skill. During the application the treatment when heated releases fumes that may irritate your eyes breathing. Please perform a sample test prior to fully applying the product on the hair. Wear gloves and work in a well-ventilated area.Wear gloves and work in a well-ventilated area. For professional use, read all instructions warnings prior to buying and using the product. The application process may take 90-150 minutes depending on hair length and skill. During the application the treatment when heated releases fumes that may irritate your eyes breathing. Please perform a sample test prior to fully applying the product on the hair. Amazing results, one of the best in the world. Eliminates frizz and curl, promotes healing of hair, blocks the effects of humidity, great for all hair types. Great Formulation: Enhanced for tough cases of curly stubborn hair. Strengthens the hair using an intense conditioning remedy. Contains Moroccan Argan oil and Amino acids. Advanced, yet fast and simple to use treatment that instantly straightens, smooths, repairs, conditions, and strengthens the hair using an intense conditioning remedy which restores vitality by repairing the hair from the inside out. The amazing results will leave hair elastic, flexible, and soft with a naturally vibrant shine. Professional Grade. Instantly Straightens and Smooths your hair for 4-6 months.