I just want to tell the girls who want a yuko straightening never to go to Fiz makeup.
My experience there was a nightmare (40 pounds more than the asked price at the end of the treatment, no hair washing, eyes burned with the product...)
And today my hairs are burned and curlier than before, I had to cut them very short.
So I can only recommand to find a good hairdresser, pay the price and NEVER go to fiz makeup.