Not effective, deceptive; Do not try until you see an invalid refund. The first course of treatment was invalid, and they recommended me to buy the enhanced version, which was invalid and refunded. So I bought it and it continued to be invalid. I was asked to trust them again and pay another formula. In that case, if it doesn't work, all the money before will be refunded. I didn't continue to ask her to give me back the money before, and there was no response. Don't trust those who cheat money. Online shopping needs to be cautious. If you are cheated, you don't know where to look.