Cosrx Acne Pimple Master Patch The Cosrx Acne Pimple Master Patches ($15 for a pack of four) are a game changer when it comes to spot treating. Stick one of these patches onto a whitehead, and watch it draw out all the pus and liquid from your pimple like a magnet. Image Source: amazon.com Cosrx Acne Pimple Master Patches $15 from amazon.com Buy Now