Oily markers have many colors, rich colors and are not easy to fade. I study fine arts, and I think propylene is better. It is an artistic pigment, which can be used to paint oil paintings, similar to watercolor gouache, but it is not easy to fade, change color and be greasy when it is dry. If you have a good grasp of water when drawing on clothes. Everyone who studies painting has used it, and it is in art stores.