A whitening composition, an oral care product including the whitening composition, and a method for whitening teeth are disclosed. The whitening composition may include an anhydrous component and an aqueous component. The anhydrous component may include a base gel and a chloroisocyanurate. The chloroisocyanurate may be present in the anhydrous component in an amount of from about 0.01 weight % to about 30 weight %, based on a totally weight of the anhydrous component. The anhydrous component may include water.