Colgate peroxyl oral rinse helps heal and alleviate discomfort caused by minor mouth and gum irritations such as gum inflammation soreness and mouth ulcers its clever formula rapidly releases oxygen in the mouth resulting in an antibacterial effect on bacteria how colgate peroxyl oral rinse works the release of oxygen helps remove debris and has an antibacterial effect on anaerobic bacteria this facilitates healing and alleviates discomfort caused by minor mouth and gum irritations such as