COLORZ beeswax crayons consist of only three ingredients: 1) Natural and local beeswax, 2) Vegan waxes and 3) Colorant (High quality fine organic synthetic pigments) COLORZ beeswax crayons do not stain hand, There is no fillers such as lime, The pigment ratio is very high, You can use less crayon to paint an area than their benchmarks, It consists of colors in Waldorf pedagogy, It is completely handmade, It is certified by EN 71 standards You can safely use it.