The present invention is drawn to
adhesive solid gel-forming formulations, methods of
drug delivery, and solidified gel
layers for dermal delivery of a
drug. The formulation can include a
drug, a
solvent vehicle, and a gelling agent. The
solvent vehicle can include a volatile
solvent system having one or more volatile solvent, and a non-volatile
solvent system having one or more non-volatile solvent, wherein at least one non-volatile solvent is flux-enabling non-volatile solvent(s) capable of facilitating the delivery of the drug at therapeutically effective rates over a sustained period of time. The formulation can have a
viscosity suitable for application to a
skin surface prior to
evaporation of the
volatile solvents system. When applied to the
skin, the formulation can form a solidified gel layer after at least a portion of the volatile
solvent system is evaporated. The solidified gel layer is can be removed by either peeling or washing using a designated solvent or solvents.