The Dual-material Paintbrush Handle with Internal Fixation is comprised of two primary components. The first component is the flexible upper section that contacts the user's hand. The second component is the lower transition section, which acts to transition from the softer and more flexible first component to the ferrule, which is generally rigid. The lower transition section includes connection locations for the ferrule, and penetrations through which the soft upper section penetrates, stabilizing the connection between the upper and lower sections.