The present invention relates to compositions and methods for the whiteningof natural and manufactured teeth without the use of peroxides or abrasives.Theactive ingredient hi the present invention is "actinidin" (crude or purified)and isproduced from kiwi fruit. The present invention provides for the use of thecompositions and methods of the present invention as a tooth whitening agentin a in astrip, tray, floss, dentifrice, rinse, mouthwash or devices like pastilles,chewing gumor lozenges.