The present invention relates to a dry type teeth whitening patch with a multi-layer
structure of three or more layers. More particularly, in the dry type patch, a
contact adhesive layer substantially free of peroxide comprises a hydrophilic glass
polymer as a base polymer so that it provides substantial adhesive strength when
hydrated by water, an active material reservoir layer comprises peroxide as a teeth
whitening agent, and a backing layer which is impermeable to water. The dry type
patch of the present invention has superior teeth whitening effect and excellent
peroxide stability at a high temperature since the peroxide-containing layer is
covered and protected by other layers.