This Solar Specialty Powder, Pink to Purple, is part of the Spin It Collection from We R Makers. This package contains 0.35 ounces or 10 grams of light reactive pigment powder. This powder when left in the sunlight changes color, it goes from pink to purple. To use, mix the powder into the epoxy (sold separately) and when it is in the sunlight, you will see the color change. This powder can also be added to slime and nail polish.