5 /5 grace alvarez: Its not about cut and dye hair. Its about to know the product, the hair, and what everything does. This is a keratine treatment done on a 14 years old girl with allergies. This was safe for her, no smell, no hazard chemicals, no odor at all. Final result? She has straight hair and doesnt get curly after wetting her hair. Also she have the volume of hair of 4 to 6 normal women.