Abstract: A single rotary blade grooming trimmer for sculpting and trimming eyebrows in an attractive arched shape. The single rotary blade grooming trimmer includes a housing with a generally L-shaped configuration having upper and lower ends, and upper and lower portions. The upper end of the housing has a rotatable shaft extending therethrough. A plurality of rotary cutting blades outwardly radiate from the rotatable shaft adjacent an outer end of the rotatable shaft. A motor for rotating the rotatably shaft is disposed the housing. A protective cover substantially covers the cutting blades. The protective cover has a plurality of spaced apart radial slots therethrough with each radial slot comprising a pair of elongate portions preferably of equal lengths. A first of the elongate portions of each slot is located on an outer face of the protective cover and a second of the elongate portions of each radial slot is located on a perimeter side wall of the protective cover.