California Small Group — The Luna Method The Luna Method offers top-rated, physics-based hair extension training for hair stylists. In-person & virtual certification. Elevate your career! APPLY NOW! Get certified in the Luna Method America’s safest, most advanced hair extension technique. Flexible hair extension courses for licensed stylists. Online & in-person. The Luna Method: science-backed hair extension education for stylists in every U.S. state. Learn what sets us apart.