Transform your tub or kiddie pool into a magical, fun goo-filled world. Gelli Baff turns water into colorful goo and back again. Entirely safe, it won't stain kids or towels, but it turns the water brilliant different shades. Simply dissolve the powder mixture into bath water and watch as the water turns into a thick, jelly-like substance. When the fun is done, add the dissolver and the jelly turns back into water again for hours more of fun. Color will vary.