Like because of the ingredients or because they use animal testing or because of their advertisements or whatever. I don't have that problem, but one of my Tumblr friends is blowing up the lot because apparently some cosmetic company or another is being the most evil thing in the history of forever... or something. So yeah anyone?
I don't really follow the ins and outs of animal testing with different products. To me, at least they are being tested before they go on my face, haha. But as far as refusing to use certain products, yes, I do. I will never use drug store make-up, even if it is given to me, or I'm paid to wear it. In all of my experience, drug store make up looks and feels as cheap as it is, and lasts as long as it should for the price (which is to say, not long at all). I'm a super thrifty person and I'll pinch pennies in tons of situations, but beauty products are one of my few items not to scrimp on, and it has always paid off for me.