A constricting hair cap includes an elongated, generally cone-shaped body having a crown section, a middle section and an open bottom end. An elastomeric band is positioned along the bottom end, and a plurality of drawstrings extend upward from the bottom end through an aperture located on the crown section. Each of the drawstrings are positioned within a channel that is located inside the main body and are connected to a cord stop that is positioned adjacent to the aperture along the outside of the main body. Each of the drawstrings are positioned evenly along the main body and function to transition the main body between an extended position and a constricted position upon receiving a pulling force.