Bonjela Cool Mint Gel Bonjela Cool Mint Gel relieves the pain & discomfort caused by common mouth ulcers & cold sores. It can also be used to aid the healing of sore spots & ulcers caused by dentures & braces. Bonjela Cool Mint Gel contains choline salicylate, a painkiller & anti-flammatory to soothe sore areas & cetalkonium chloride, antiseptic to kill bacteria & help prevent infection. Bonjela Cool Mint Gel is suitable for adults & adolescents over 16 years only.