I think women should do what makes them happy, and I have heard that wearing makeup makes them feel pretty or gives them confidence.
The thing is, should you need something to be confident? What does this actually mean to be dependant on a product?
Are lipstick Feminists really true Feminists?
Eh, I wouldn't want to be in the business of determining which strands of feminism are true feminism.
I think just about everyone needs
something to be confident. At the extreme end, most people wouldn't go out into public naked after not bathing or grooming for a week, for example. So that's a starting point. More realistically, people tend to be more confident if they view themselves as looking good (whatever it may be, wearing flattering clothes, a man with a clean-shaven face, being in great shape, etc.) or perhaps more precisely, if they are able to express themselves in the way they feel is fitting. So the real question would be,
how much should people need to feel confident?
I rarely wear makeup, except for nail polish which I do wear sometimes. I do spend time on my appearance such as through moisturizing, epilating, giving myself facials, doing my nails, and most importantly exercising and eating right to be in good shape with healthy skin and hair, but I tend to view naturalistic and comfortable beauty as the ideal, so I minimize anything that needs to be maintained on a daily basis, like the daily application of make up. So, there's never anything artificial on my face in a regular day. I just like to feel comfortable and to look in a way that I feel is fitting. Different cultures, even hunter-gatherers, tend to have times when men and women dress up for things, alter or paint their bodies in some way, and it can be an expression of art, culture, self, masculinity, femininity, entertainment, and so forth. I don't mind spending more time on my appearance for a special event including something on my face; it can be fun.
The only real problem I have with make-up is when there is a cultural expectation that women should always wear it. That they're missing something without it. That men look fine as they are with just a haircut and a shave, but women need more. That it's okay or even expected for women to wear painful shoes. A lot of women wouldn't be caught dead outside without make up on. I literally don't think my aunt has left her property without make-up on for decades; to propose that she does so would sound to her like proposing she go out naked- completely alien and out of the question. I do think it becomes unhealthy if make-up becomes viewed as a necessity to face life each day, that without it there is incompleteness.