Those of you saying that you are teaching your children not to conform are making problems for them in the future. Mark my words.
I live in a very non conformist town and the faff we had when the secondary school brought back school uniform was horrendous. It is not teaching them how to get on in the real world. Any child who wants to be a policeman/ nurse/ coastguard they have a uniform, a dress code at the very least: by encouraging the children to reject the school uniform the parents made an issue out of something that was a non issue.
Just as some of the people on this thread are doing over a little bit of lip gloss and eyeshadow. The ones worrying about chemicals and not wanting them on their children's skin are the ones who cause a problem, in the same way as children that are denied sweets are usually the ones who crave them, and go crazy on them when mummy isn't around.
A little of everything in moderation is better for well rounded individuals. Obviously keeping in the legal boundaries. I would never encourage my children to take drugs for example.
The children who are denied make up at a young age when playing dress ups are the ones who will rebel in their teens and plaster the stuff on as soon as they leave the house. The ones who have "played" with it either learn that less is more and know how to apply it properly or aren't interested by the time they reach their teens.
For the record I very rarely wear make up. And when I do it's for my benefit, because it makes me feel good, not because I want others to think I'm pretty.
My dd, at 11, is very good at applying make up. And knows what looks nice. She doesn't wear it everyday, maybe if she is going to a function or when she is performing. She has decent make up and knows that she needs to wash it off to prevent spots. She's never really seen the need to have "kiddy make up" because she had always used proper make up for festivals and shows with her dancing.
I actually agree with pictish that you can pick holes in all the role play games children play. Why are we encouraging our children to play pirates? Or soldiers? What's wrong with wantig to play at princesses? It's your insecurities and problem. Not the children's.