I‘m itching to add “es” after “patch” on the COSRX Acne Pimple Master Patch, since it’s actually 24 patches. (Forgive me if I’m being pedantic, but it’s a pet peeve of mine — “red lip, “smokey eye”, “black jean”. It’s not a literary style — just a basic grammatical error.) These are, in fact, very thin hydrocolloid dressings. If you’ve used Nexcare’s version then you’ll already be familiar with how these work — they work exactly the same except COSRX’s blend into the skin a lot more seamlessly.
I’m not sure how helpful these really would be if you did have acne problem, since I can’t imagine it would be cost-effective to have to regularly apply multiple plasters. And it also does not treat or prevent breakouts, if you do suffer from acne — it’s a Band-Aid solution (both literally and figuratively). But for the occasional distinguishable pimple, one with an almost-emerging head, the Acne Pimple Master Patches are brilliant.
There are three sizes in the pack. You stick to clean, dry skin and then just leave for the night, or day. It really does stick! I’ve left one on for 12+ hours and it was still stuck fast — I peeled it off to find just a flattened pinkish blob where previously there had been a hideous pustule. The Master Patches absorb all the gunk that comes out of the pimple, keep bacteria out, and keep the small open wound moist to promote healing. The added benefit of having a little plaster stuck over your pimple is that you can’t use your grubby fingers to poke, squeeze, or prod.
Ideally, you want to wear it overnight, but if you wake up to find a pustule on your face, it’s far better to sport one in the daytime then leaving it out in the open or piling concealer to cover it (which makes it look even worse!). I wore one near my jaw for a packed day and no one noticed. I blended a bit of waterproof concealer over the top just to take edge off and it was nearly undetectable.