OK call me totally behind the rest of womanhood, but what is mineral makeup? I have adult acne and have used Merle Norman's Aqua base lqiuid foundation FOREVER. Its the only one that doesn't turn me orange or lead to breakouts. I think it has zinc oxide in it. I don't use moisturizer because they all make me breakout regardless of what they say--and I figure with adult acne I am self moisturing anyway (44 and no wrinkles so I must be right!) Anyway, in hot humid weather I would not want to wear much foundation at all. Once I get sun-kissed I usually go without foundation---just a super high quality sensitive skin facial sunscreen since I am also very light skinned and burn easily So, what is this mineral stuff and does it have sunscreen in it? Is it ok for peopel who break out with almost everything?