A shearing device is provided for such applications as trimming hair in the nose. The shearing device includes a housing having a top portion and a bottom portion, where the top portion has at least one opening and a plurality of ridges that form channels adjacent to the at least one opening. At least one cutting blade assembly is disposed in each of the openings in the top portion of the housing of the shearing device. Each cutting blade assembly includes one or more blade members. The top portion of the shearing device includes a plurality of ridges that bracket the cutting teeth of the blade members on the cutting blade assembly. The plurality of ridges form channels that expose the teeth of the trimmer blade members, and space the teeth on the blade members of the device away from the skin. The length of the hairs remaining after cutting is determined by the depth of the channels formed by the ridges. In one embodiments of the invention, the cutting head of the shearing device includes a single opening, and a single cutting blade assembly. In another embodiment, the shearing device is a double-sided shearing device, which includes two openings located on opposite sides of the cutting head, and two sets of cutting blade assemblies.