Description Boutique Whitening By Night is a 10% carbamide peroxide gel, containing potassium nitrate which is a proven desensitizer. Worn for 4 hours or overnight, this gel is designed for patients who would prefer not to have their custom trays in during the day and would prefer to whiten whilst they are asleep. Boutique Whitening By Night is a 16% carbamide peroxide gel, containing potassium nitrate which is a proven desensitizer. Worn for 4 hours or overnight, this gel is designed for patients who would prefer not to have their custom trays in during the day and would prefer to whiten whilst they are asleep Boutique Whitening By Day is a 6% hydrogen peroxide gel, containing potassium nitrate which is a proven desensitizer. Worn for only one hour per day, this gel is designed for patients who want a fast, comfortable and convenient solution to whiter teeth. *Not to be used on a person under 18 years of age.
