Choose from:
[+] You want them to be in the exact right size and shapes. The glow will go best with the items you're using..
[+] Stir the powder into the hot liquid until dissolved. Add the powder to the liquid, waiting for a minute or two until it's absorbed..
[+] Larger particles are brighter, but also make a rougher paint which can create a speckled look. Smaller particles create a smoother paint, but don't glow as brightly..
[+] Be sure to choose one that flatters your body shape and eye color. Avoid using a translucent powder to add shimmer..Choose from options above and answer: What most naturally follows?

How to make glow in the dark paint
Choose a glow in the dark powder.
You can find glow in the dark, or phosphorescent, powders online or at some craft and art supply stores.
The powders come in a variety of colors and particle sizes.
Answer:
Larger particles are brighter, but also make a rougher paint which can create a speckled look. Smaller particles create a smoother paint, but don't glow as brightly.