​Heir Theory Salon in Harrison, NY, specializes in premium hair extensions, offering expert installation and flawless color blending by renowned extension specialist Nikki Dioguardi. With a reputation as the best place in the world for hair extensions, Heir Theory provides luxury beaded row sew-ins, keratin-bonded extensions, and custom-colored wefts for a natural, seamless look. Our salon is dedicated to creating volume, length, and dimension while maintaining the health and integrity of your natural hair. Located in Westchester County, Heir Theory serves clients seeking the highest quality hair extensions, perfect color matching, and a personalized salon experience. Book your appointment today at Heir Theory Salon to transform your hair with the latest techniques in extensions and coloring.