Kraze F.X. Neon colours, as other brands, are made with pigments that have not been approved by the FDA to be used in cosmetics (the FDA has not tested them yet for cosmetic use)
They have been independently tested and have been determined safe for cosmetic use by independent laboratories.
However, following FDA guidelines these colours are labeled as a Special FX product to be used on hair, prosthetics, clothing, etc. and “not” a cosmetic product.