The product is very well there is possibility of smoothing curly hair to make it smooth and then make a careful use only. The product used in the fourth step "step 4" can also be used for the care. The formula of the product is very interesting insofar as the hair is not damaged and is not burned. I also read that this brand belongs to Clarins, which is known for quality products. By cons when smoothing use is a long time for a perfect smoothing but it works well and seems to hold. If a friend lavishes care what you choose one that is patient!