Makeup is meant for adults; there are no two ways about it. Sure, kids can experiment and have fun with their mom or older sister's makeup, but only with adult supervision and within the framework of playing dress-up. Aside from the fact that adults encouraging children to wear makeup hild can cause body image issues that a child shouldn't have, some makeup contains chemicals that aren't designed for children's skin and can cause irritation and rashes. One father discovered this the hard way when his wife experimented with her makeup on their two-year-old child, which caused her to break out in a rash. A parenting war erupted over who was right.