Brazilian Blowout is customizable, which means it keeps curl but takes away the frizz. You can customize this treatment with the amount of heat you use and the amount of passes you take with the flat iron. The less heat, the less straightening and smoothing. The more heat, the more straightening and smoothing. Consult with your stylist for the amount thats right for you! You can leave salon and immediately, put your hair in a pony tail or style it without worrying about changing the shape of your hair. After about 12 weeks the solution rinses off and your natural curl pattern returns. There is no line of demarcation with new hair growth. Make sure you use sulfate free shampoo! I recommend using Brazilian Blowouts products, but if you don’t get them sulfate free works too!