Master-Aid Corn Plasters are topical corn removal plasters indicated for the treatment of corns and calluses located on the toes or in areas of greater plantar pressure. Each plaster measures 71 x 22 mm and incorporates a central disc impregnated with trichloroacetic acid, a keratolytic agent that acts on thickened skin, promoting its gradual removal. Simultaneously, the polyurethane foam ring creates a protective barrier that reduces friction and distributes the pressure exerted by footwear during walking, providing greater comfort while walking. The polyethylene backing, similar in color to the skin, is discreet and adapts easily to the foot, while the hypoallergenic adhesive ensures effective fixation throughout the day. The package contains 12 plasters, constituting a practical solution for the localized treatment of calluses at home. This is a medical device intended exclusively for external use.