The Goldwell Dualsenses Rich Repair Intensive Conditioning Serum is a concentrated, leave-in professional ampoule treatment designed to rapidly reconstruct dry, stressed, and damaged hair from the inside out. Deeply repairs internal and external hair structures to reduce breakage by up to 95% Distributes active nutrients evenly while providing built-in color fade protection Restores natural elasticity, smoothness, and high-gloss shine in minutes HOW TO USE Shake the 18ml vial well before application. Work the product thoroughly through clean, wet or towel-dried hair. Leave the treatment in (do not rinse) and style as normal.