This has been one of my favorite cosrx products for my acne prone skin. Whenever I get a pimple, I put this on and go to sleep, and by the next morning, the inflammation is almost gone. This helps to minimize irritation and infection, because I can put my makeup over the patches and prevent the open acne from getting infected. Hydrocolloid bandages are great in drawing out all of the pus from the pimple, and really speed up the healing process. They come in 3 sizes, with the smallest ones being unnoticeable.