I have the most unmanageable curly hair. Its very frizzy and frazzled looking. After this treatment, I iron out my hair, and I am NOT afraid of humidity!! Though it did not straighten out my hair completely, but it gave it some weight and healthy shine that I desperately needed. I’d say it left my hair at a wave, where I don’t have to straighten it out every day. I can confidently just wash and go.