A device for delivering an oral healthcare substance to the teeth, gingival and/or mucosal tissues comprising a strip of an orally acceptable flexible material with an oral healthcare substance deposited it or impregnated into its bulk, capable of adhesion to a tooth surface but with the adhesion function being provided independent of the oral healthcare substance. A preferred device comprises a strip of a plastically deformable material, to which is attached a layer of an absorbent material, with a peroxide-containing tooth whitening gel on the layer of absorbent material.
