Good advice is to go to a proper place as myself and partner didn't see any difference. My teeth was 16 (shades I mean) before and no difference after. My partner has a much browner teeth and he see any difference too
The place is downstairs and while first impressions weren't 1st class, the treatment was bang on. The guy treating me was great. Informative, nice and checked up on me all the time. I also go a repeat voucher to come back which I'll be using for sure! All in all, it's worth the price and would recommend
I had a standard whitening session, and left with teeth a few shades brighter. The basement salon - beneath a hairdresser's in Holborn - was clean and peaceful, the treatment administered calmly and professionally. My teeth hurt for a day or so but that has subsided completely. I may return for a top-up.