Okay, I missed where this topic took a sharp turn into a debate over cosmetics, probably because my hormones took a brief visit to the Shire; but since we're here...
We can discuss the history of make-up and the patriarchy but what's the use? We all know the history and we all know there's a male privilege that influences us whether we like it or not. I'm not condoning the patriarchy nor am I accepting it. I think it's best to ignore the elephant in the room for the debate as it relates to women wearing cosmetics, shaving their legs or wearing high heels.
There's no mistaking that if a woman feels more confident wearing a layer of minerals that she is more confident. This is really nothing more magical than wearing clothes that make you feel good. However, if a woman feels silly wearing make-up, there's no reason for her to ever wear it. Any gains that she may receive from altering her appearance wearing make-up (by mainstream standards) would be lost in her awkward demeanor and negative energy. She'd be just a ball of discomfort and awkward with a smooth complexion.
I don't think wearing make-up makes one a liar, nor does it even mean one is misrepresenting oneself. Cosmetics is prevalent in our society so men generally expect that women are wearing make-up. This means it is expected that a woman's complexion may not be as perfect as it appears because she will be wearing make-up to smooth it, her height may not be as tall because she will be wearing heels to increase it, her waistline may not be as narrow because she will be wearing spanx to decrease it. These are common expectations whether or not any woman engages in these grooming and dressing habits. The men who are generally aghast with women whose eyes aren't really that blue or who wasn't a natural blonde are generally viewed as strange, silly men for getting upset with such things. A friend of mine has an ex who felt betrayed because she wasn't a natural redhead. They never had a conversation where she claimed she was a natural redhead so he's generally viewed as an idiot.
With that said, a woman is not obligated to accept or participate in any of these activities. I don't think anyone really thinks make-up is the source of oppression but it certain is reasonable to not see a purpose for it and refuse to put it on your skin.
For myself, I wear make-up because it makes me feel good. It's fun to experiment and play, and I feel comfortable. I also wear perfume and the scent that I wear matters to me. I can name certain periods in my life based on the scent that I was wearing at that time. The problem is that I don't REMEMBER to do it. So many times I walk out the door and forgot to put on make-up, do my hair or dab on some perfume.