For colored slime, you can also add some drops of food coloring to the mixture in order to get your desired hue.
Once done, store your homemade slime in an airtight container! You may have to continue adding more cornstarch if the mixture is too sticky or wet while kneading it. Finally, place the mixture on a flat surface and knead it with your hands for several minutes until it becomes stretchy like slime. Next, add food coloring if desired and mix again until completely blended. Use a ratio of 1 cup of cornstarch to 2 cups of water and mix the two until they form a thick paste. Start by mixing together cornstarch and water. To make slime without glue or activator, you will need to use simple ingredients that can be found in most households.