A dental floss apparatus for cleaning the gaps between adjacent teeth which is comprised of a pair of handles that are configured for engagement with the fingers with strands of flossing substrate extending therebetween. The flossing substrate runs substantially parallel and extends within an opening formed between the ends of the two handles, during tensioned employment of the handles by a user. A dissolvable component is positioned within the opening through an engagement with one or both of the handles or the flossing substrate. The dissolvable component dissolves to a solution during use to deposit a residue on the surface of the teeth. The solution from the dissolving component may be colorized or fluorescent, and have an additive material such as mouthwash, breath freshener, cooling agent, or flavor.