I bought wowcher for balayage and cut. The cut was really good however the balayage was not great. I had a picture and showed hairdresser how I wanted it done. However, you can only see the colour a little at the back. You would hardly notice it and I have dark brown hair so the dye should b more obvious. You can't even see colour at front of hair. I mentioned it to hairdresser and she said it was because I had dye already on it. She said we could do more next time. It was 8 o'clock and I just paid the extra £15 because of long hair so I could go home. I was worried as another girl read review who said girls hair fell out. Even my boyfriend said there's not enough. Then as I left I got a text offering half price on treatments if I paid £50! I just think the whole voucher was a con. It sounds like they'd do it properly if you come again and pay full price. I won't go back. I believe if service is booked for special price or voucher that same level of standard should be same regardless.
My hairdresser was extremely skilled and spent time to talk through and make a personal plan for sorting out my bad roots! Very good quality technique, would highly recommend!