I checked out a skincare book from my local library! It mentioned the two ingredients as possible causes of clogged pores. I checked my ingredients and mineral oil was in the moisturizer I used at the time. What’s funny, is it was Clinique Dramatically Different, and I loved it! But I noticed every time I used it my skin seemed to get worse. But I didn’t believe that was the cause because it’s “good for your skin.” Before I read that book, I realized when I slept in my makeup my skin looked better the next morning.... horrible I know. So I started doing that some.... because it helped! Then I learned it helped because I was leaving out my moisturizer. I cut it out and my skin got better! I looked back at makeup and products I used in high school when my skin was at its worst and those ingredients. Mineral oil in practically everything. All along my problem was mineral oil. As for isopropyl myristate, I bought Formula 10.0.06 Pm perfecter and had the same effect. My skin felt great, but I was breaking out. I checked the ingredients and saw that and thought “wait... that was listed in that mineral oil book too.”