Colgate Optic White Whitening Mouthwash. Because this formula is enamel-safe and alcohol-free, there’s no afterburn when you rinse. It also promises to be gentle on gums.

Colgate Optic White Whitening Mouthwash. Because this formula is enamel-safe and alcohol-free, there’s no afterburn when you rinse. It also promises to be gentle on gums.

The most commonly mentioned downside to this toothpaste is the cost, with a 3-pack on Amazon costing $25.56 (compared to a 4-pack of Colgate Optic White for $15.96).

Colgate Optic White Whitening Mouthwash. Because this formula is enamel-safe and alcohol-free, there’s no afterburn when you rinse. It also promises to be gentle on gums.

Colgate Optic White Whitening Mouthwash. Because this formula is enamel-safe and alcohol-free, there’s no afterburn when you rinse. It also promises to be gentle on gums.