Colgate Whitening Toothpaste Causes Canker Sores After One Use
For a long time, whenever I use Colgate Advanced Whitening and Colgate Max Whitening toothpastes, I develop canker sore–...like mouth ulcers. Even if I use the toothpaste just once, it causes significant sores and irritation inside my mouth. The products still have about a year left before their expira