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!!!
Check what your products are based on. For oily skin, surprisingly, oil/silicone based products hold best (though they induce acne). Water based products can crack and appear blotchy if the skin is oily enough. This is doubly so if you use products that are based on different consistencies. Say, if your foundation is water based, but your primer and moisturiser are oil/silicone based, it’s gonna look bad, and vice versa, and even if the primer and moisturiser are different bases.