Crayons can be all sorts of different colours, not just orange and purple. Do you know what they're made of? Martin: Are they made of wax? Curious Cat: Yes, that's right. And wax is made from oil ...

The stains won’t get worse if you take a minute to figure out the best course of action—this is likely as bad as it’s going to get. That said, crayons are made from wax and petroleum oil, and they ...