This AHA is really good at clearing closed comedones. I use it every other night on freshly cleansed skin. I use the Cosrx AHA/BHA Toner on my clean skin, then two pumps of this AHA. I can sometimes feel it sting a bit, but it's not too bad.
I will note that this smells kind of fishy. In fact, it smells exactly like the liquid that shirataki noodles are packed in. They're the weird low carb noodles made from konjac flour. However, the smell is not very strong, and it goes away after just a few minutes.
I let this sit for 20 minutes, then continue with my routine. When I first started using it, I saw improvements within 2 weeks. I alternate this with the Cosrx BHA Blackhead Power, which works great for blackheads and sebaceous filaments.
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