The Goldwell Dualsenses Curls & Waves Intensive Conditioning Serum is a professional leave-in salon treatment designed for wavy, curly, and permed hair. It instantly moisturizes, fights frizz, and improves hair elasticity and bounce with a milk protein and MicroPROtec complex formula. Deeply nourishes without weighing hair down Detangles and defines curls Helps prevent color fade-out Enhances elasticity and bounce Reduces frizz for a smooth finish HOW TO USE Shake the 18ml ampoule well before use. Work the liquid evenly through wet or towel-dried hair. Leave in—do not rinse. Style as usual.