Oyasa Crayons ~Standard~ Oyasa Crayons Standard are crayons made from rice and vegetables. Using rice bran oil and rice wax as a base, we've incorporated the outer leaves of vegetables, which are usually discarded during harvest, as raw materials. To ensure the safety of young children, the pigments used to color the vegetables are the same ingredients used in food coloring. They are made entirely of safe materials, even if accidentally ingested. ◎ Opened for photography, but unused. ◎ Please feel free to contact us if you have any questions. Thank you for looking.