Depending on diet and lifestyle habits such as smoking, drinking and eating foods that feature staining properties such as coffee, red wine and curries, and dental regime, teeth can become discoloured. A bleaching process known as teeth whitening can help counteract stains and discolouration on the teeth, and is one of the most popular cosmetic dentistry procedures carried out around the world. We offer two different types of teeth whitening techniques in Istanbul, the first being laser teeth whitening, and the second being professional home whitening kits. Both are based on a bleaching process using peroxide-based gel. The higher the concentration of peroxide (usually ranging between 3% and 30%) the more effective the gel is at teeth whitening.