what is in MAC that it makes some breakout?

I haven’t been so careful with my skin as i have been for a quite a while now. almost army like!
and i RARELY wear “makeup” … nothing on eveyday basis .. and if i have to go somewhere .. then just the primer, powder foundation, concealor, blush, mascara and lipgloss. that’s it. and even more rarely an eye-liner/eye-shadow.

chanda if you have sensitive skin, is it safe for you to use the glycolic/salicylic peels?? … iv been really thinking of using the “for oily/acne prone” salicylic peel … but have been a bit apprehensive. they say at your own risk??

and mineral-oil products .. which ones would that be? even mineral makeup?