Phthalimidoperoxycaproic acid is an advanced whitening agent, popularly known as PAP which does not present the common side effects associated with Hydrogen Peroxide whitening agents. Unlike other traditional whitening products, it does not produce free radicals which can destroy tooth enamel and gum tissue.

It works through soft oxidation of stains such as coffee, tea and red wine and is generally safer for those people who have sensitive teeth or gums. Read more about how it works here