Colgate Optic White Mouthwash has a clinically proven unique formula with optic brightener that activates as you swish to reflect light, leaving your teeth looking whiter instantly. Use it twice a day for the most confident smile: - Whiter teeth after the first rinse - Provides daily stain defence - Has a great refreshing taste - Alcohol free Clinically tested by Dentists. For best results, use Colgate Optic White mouthwash with Colgate Optic White toothpaste and toothbrush. Size: 500mL Directions: Use 20mL twice a day. Rinse mouth thoroughly for 30 seconds and expel. This bottle and cap is recyclable. *Temporary optical effect of instant whitening. Long lasting protection with continuous use. INSTANTLY WHITER TEETH: Whiter teeth after the first rinse* STAIN DEFENCE: Provides daily stain defence UNIQUE MOUTHWASH FORMULA: Colgate Optic White Mouthwash has a clinically proven unique formula with optic brightener for whiter teeth SMILE WITH CONFIDENCE: Use twice a day for the most confident smile ALCOHOL FREE: Alcohol free formula, does not contain ethanol