GRNE ~ Aveda has tons of INFO on youtube and at aveda.com https://www.youtube.com/user/aveda https://www.youtube.com/watch?v=HZIlUgFXUUU https://www.youtube.com/watch?v=Wvub-qFLpuQ https://www.youtube.com/watch?v=euE3bE_XHlY https://www.youtube.com/watch?v=nWlcVRQAADw https://www.youtube.com/watch?v=8w13QTbUZho https://www.youtube.com/watch?v=yGWOHPf7GhY