Hello! I have very oily skin and bad acne, for context. I take care of my acne as best I can, but it is unfortunately hormonal/genetic. Even on the good days, though, after a few hours, my foundation (Maybelline FitMe Matte, or Nars Sheer Glow, or Sunset Makeup) ends up pulling apart and kinda letting the oil seep through, if that makes sense. I use moisturizer and primer, so I’m thinking that might be the issue? Along with the oil, it’s too much for the foundation to hold? But idk! Any oily folks, please help!!!
Since you have oily skin, skip the moisturizer. This myth of always using moisturizer started years ago to sell more face cream. Skip the primer. Instead “prime” your face first by dusting your face with a thin layer of talc face powder. This will leave your skin with a matte and dry canvas before applying foundation. Apply the foundation next. I would also try Estee Lauder Double Wear Foundation. It is pricey but the only foundation that truly sets well on oily skin. I would then use only powder blushes and eyes shadows. Your skin is oily so you don’t want to add any more oils that will cause your foundation to break down.