H.R. 7933 expands TRICARE, the military health insurance program, to cover wigs and treatment for traction alopecia, a condition where hair loss results from prolonged tension on hair follicles, often caused by tightly gathered hairstyles or chemical treatments. The bill affects military service members and their families who are covered under TRICARE. By September 30, 2026, the Department of Defense must establish regulations and training materials to educate service members about how certain hairstyling practices, dyes, and chemical products can cause traction alopecia and related health problems. The legislation does not specify funding amounts but amends existing military health law to authorize these expanded benefits without requiring new appropriations.