Inclusion Criteria:  Each participant had at least 8 teeth with mild to moderate dental fluorosis score 1-4 according to Thylstrup and Fejerskov index.  Participants of age range 20-35 years old Good oral and general health Had no caries or restorations on the teeth to be treated Ability to return for periodic recalls  Exclusion Criteria:  Hypersensitive teeth Any fixed orthodontic appliance Current or previous use of bleaching agents A history of allergies to tooth whitening product Smoking habits Pregnant or lactating women