Hair Color by L’Oréal Paris. Details:For light Blonde or bleached hair. Colorista semi permanent hair color Allows you to play with color your way. Customize your look and transform your style. Choose your favorite L'Oreal Colorista shades like our pink, blue, and purple, or mix with the Clear mixer to create custom pastels. Colorista is an ammonia free hair color and gradually fades with shampooing so you can play again! For the most visible results, apply on light Blonde or bleached hair.