One would think that a member of a heavily capitalistic society wouldn't have difficulty with spending money on mass-produced items. In theory, all of the salespeople should be happy to do their jobs regardless of the circumstance, and it would be a bonus if the person they were selling to weren't entirely familiar with the product - more saleability; more ability to up-sell.
The premise is still valid when one takes other shoppers and their thoughts and feelings into consideration, however. This may overcome by the knowledge that there are, in fact, men that buy make-up simply because they like it, and because it improves their look. However, how one reacts to the emotions and thoughts of others is, of course, a very individual experience and no certain knowledge is determined to help everyone, or even most. But I'm sure that other shoppers are not as considered as the employees, so hopefully overcoming the need to have an excuse in case of odd looks or confrontations is unnecessary.
As for myself, I do not buy make-up. In my current circumstance, it is an unnecessary luxury, and it's unhealthy for the skin. The effects are rather long-term, and it's possible that I might not live to see the harm to my skin, but the fact that my finances don't permit make-up is excuse enough.
Hopefully my point of view was dissimilar enough to the above to be of value and/or promote further conversation.