TSB Studio in Carlsbad occupies a private suite inside the McClellan-Palomar Airport's Atlantic Building on Palomar Airport Road, operating as a hair-product development and evaluation lab rather than a walk-in salon. The facility develops, tests, and evaluates new hair color chemistries, smoothing treatments, and styling tools, supplying performance data to manufacturers in the same North County beauty pipeline that feeds product-driven salons such as Pistachio Cut & Color Bar on El Camino Real. Volunteer models participate in controlled application sessions for unreleased color formulations and keratin systems, with any materials charges disclosed before testing begins. Free consultations are available for stylists and brand teams exploring new product categories, a no-cost evaluation model that mirrors the complimentary color-match consultations at Hush Heated Sunless Tan for custom DHA spray blends. Evaluation protocols track color-deposit consistency, UV fade resistance, and tensile-strength retention across oxidative developer volumes ranging from 10 to 40.