Aveda Be Curly Advanced Co-Wash is a gentle. silicone free conditioning hair wash that removes build-up without stripping your hair and leaves curls looking hydrated. defined and healthy. Enhance your curl patterns. remove build-up. and boost moisture by 85%. This curly hair wash made with 98% naturally derived ingredients works to reduce frizz and manage fly-aways for bouncy. defined curly hair between wash days.