Teeth Whitening are non peroxide treatments.Firstly ,we go through a consent form to make sure you re able to go through with the treatment.We the agree on the tooth colour by using a professional shade guide. We then prepare your mouth for treatment.Depending on what treatment you want to go for 2 x 20 0r 3 x 10 minute treatment. You have your results. We are confident with our products that you will go up to 8 to 10 shades.