I have acne, tiny flat skin tags, bumps and lumps and milia which are sometimes aggravated by some mmu. I am still sampling, still testing... What I do tho, is put a good layer of Desitin on my acne and bumps (maybe acne deep under the skin?) before going to bed and by the next morning, it's all smooth again, ready for more mmu testing! If I'm lucky, the mmu that I am testing that day makes my skin look flawless and I have no bumps by the evening.
For skin tag- like bumps, I dabbed ACV on and they started shrinking after a few days, some even fell off! So I am really quite pleased cos these things have been on my face for the last 6 years. Just two weeks ago, I was lamenting how unfair it was that I ended up with such awful (add to the list of flaws freckles and old acne scars) skin. But today, I am feeling quite good about my skin.