You’re in the right place for washable crayon.By now you already know that, whatever you are looking for, you’re sure to find it on Seeking.we guarantee that it’s here on Seeking.The luster of the product is determined by the reflectivity, refractive index, or absorptivity of the product. The better the luster, the higher the visible light reflectivity. .We aim to provide the highest quality washable crayon.for our long-term customers and we will actively cooperate with our customers to offer effective solutions and cost benefits.