Common materials include felt, fabric, polyester (including 100% polyester hair), faux fur, and plastic components.
Mustache kits commonly pair with wigs, beards or goatees, hats, sunglasses, bandanas, and eyebrow pieces to complete a character look.
Most use adhesive backings or adhesive strips—stick-on mustaches have an adhesive backing, and some faux-hair pieces use self-adhesive construction with a protective peel-off layer for attachment.
Many listings describe them as realistic or bushy, made from synthetic hair designed to create convincing old-man or character looks.
Descriptions often note lightweight synthetic materials and adhesives that are gentle; some items explicitly state they’re "lightweight & comfortable for all-day wear."