I tried the Brite Smile treatment in Bangkok in Khao San Road area I told the hygienist I have sensitive teeth because of my gums recession and she said it was ok. I went to my appointment and after she put protecting gel on my gums and whitening gel on my theet I started the first session under the blu light (she said treatment would consist of 3 sessions to be done in 1 and half hr). In less then 10 minute I had to call her and said to stop because it was too much pain and I couldn't do it! (pain staied with me for one day also after just a few minutes of treatment) She said I had to pay anyway because she had open the gel box and couldn't use it later :/
She sold me the home bleaching for a special price after I waste my money on the first treatment but she took away 1 vial from the box, so she just sold me it for the real price and after using it I am not seeing it works... bad experience.