Middle Fork Market Glow Powders - Powders are custom waterproof glow powders designed to give the strongest and brightest glow. Package Contents: Contains 75 grams of hand-selected color. Base Green is a neutral powder and glows bright green. Quality and High Luminance Vibrant neon colors made from Strontium Aluminates. This new luminous glow technology gives the powders the highest luminance and afterglow available. Our custom strontium aluminate is far superior to zinc sulfide powders Middle Fork Market Instructions A little bit goes a long way! Use 1 part glow powder and 4 parts epoxy or resin when casting and using molds. Use approximately 1 tsp for every cup of slime. For stronger color and glowing power add 1/2 tsp at a time and knead well. You can also add pigment powders to mediums such as paints, inks, glue, nail polish and resins. Charge with Light Powders will charge and glow brightly after being exposed to any light source for a few minutes! UV lights ( sunlight and black lights) work best. Charging the powder after mixing with your chosen medium will provide the best results, as each particle is given the room for full light exposure. Locally owned small business.