Described herein are dental compositions, more particularly water soluble dental varnish composition useful for effective fluoridation, in situ biomimetic remineralization and improved adhesion to enamel. The dental composition includes a hydrogel-forming polymer having cohesive properties to itself and adhesive properties to a dental enamel. The hydrogel forming polymer includes a water-soluble polymer and an adhesion promotor chemically and/or physically conjugated to the water-soluble polymer. The embodiments also provide methods of forming a hydrogel forming polymer and use of hydrogel forming polymer to prepare such dental composition.