The PPSB-0R is a unique glow in the dark pigment. The powder is white in regular light. The white phosphorescent powder turns red after you charge it and then review it under darkened conditions. Very special red and is true. Perfect for invisible black light paint applications. For mixing use 30% by weight. Example is 10 grams PPSB-0R invisible red and then 30 grams of clear paint or clear medium of choice. These are pigments which means they are like sand and does not dissolve. So watch for settling. The 30% is a very high loading. You can do much less if you want. The clearer the medium you mix with the better the results.