Elmer's DIY Color Changing Slime Kit includes color-changing craft glue in blue, purple, and yellow, as well as orange and two bottles of magical liquid. With this kit, you can create exciting slime. When you shine the UV light included in the kit on the slime, you can watch it change color. This also works with the UV rays from sunlight. The complete kit contains one bottle of color-changing glue (blue to purple and yellow to red) as well as two bottles of Elmer's magical liquid, a slime activator that replaces contact lens solution and baking soda. Elmer's PVA glue and the magical liquid are washable and kid-friendly, allowing for mess-free creations. Not suitable for children under 3 years old.