I bought these because I heard good things about them from blogs and comments. I was concerned about their arrival because the packaging was different than shown and people had concerns about its authenticity, which I only realized after purchase; But the seller replied to the comments saying they are legit and I checked the website as stated on the back of the product. Unless the seller made a full website for Cosrx including selling all the other products just to include a picture of that other packaging. I'm going with Cosrx to update their packaging. I wouldn't say they fix everything overnight but they certainly reduced it a bit at night and my cystic acne was actually gone in 3-4 days - instead of 3-4 weeks! By itself it didn't "delete" anything (like other reviewers did) but somehow managed to get it right so I could delete it. TMI: When I removed the patch the next morning, there was a white spot on the patch and my face was an open white head with no skin. With a little pressure, the nasty substances came out. For my cystic acne I used a sterile needle to create a pathway. I didn't extra jab, poke, touch etc. I kept it clean and the patch again - sort of - managed to even get that on the head. As already mentioned, even cystic acne disappeared within 3-4 days. There are no scars. I don't understand how it works scientifically, but it surprises me that it actually works. It's also important to know that this doesn't work for EVERYONE. I used up an entire pack in 4 days to experiment with various imperfections I have. I've found that with acne there needs to be a clear path for excess sebum or oil to be removed so it can fit on the patch and be removed as above. If it's too deep, or just general congestion, it stays there; or you may have to use it for several nights in a row to clear it. Nonetheless, I am really impressed with this product. That helped me alot. As I bought 4 packs it will take a while to run out; but once I do, I plan to re-order. This is without a doubt the best spot treatment I have ever used. Please note: A 5 star rating should have cleared everything up overnight in my opinion. Since this is (unfortunately) unrealistic for any product, it receives a very realistic 4-star rating. It serves its purpose and I'm very happy with it!
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