Earth Aluminate pigments are soluble in water and decompose in acid.  This means that they will loose some brightness when mixed into water-based mediums.  Acids will completely destroy their glow.

This still means they are great for solvent, oil, or wax based products.  They even can be mixed into molten glass or plastic.  They can be used in water-based mediums such as paint and concrete, but they will continue to loose a small amount of brightness over time until the water fully evaporates.

Other color pigments in the medium will sometimes shield the glow pigments preventing them from charging as fast or glowing as bright.  Therefore, we suggest clear mediums when possible.

Ultraviolet filters in mediums may block the ability for glow pigments to charge.  This can both increase charge time or lower brightness depending on the quantity and quality of the ultraviolet filters.  Most paint manufacturers will have special order product SKUs for non-ultraviolet filter versions of their paint.

Warning:  Many customers try to create a "cheap glow in the dark paint" by purchasing clear paint from a local source and the raw glow in the dark pigment from Glow Inc .  The majority of these customers end up frustrated.  If you need a paint, then we suggest that you either purchase our premixed paints or follow the instructions in our how-to articles for specific projects .