I wasn't sure if it was because I use my forehead muscles so often, but the wrinkles that form when I frown were quite deep. Unlike Botox for the jawline or temporalis muscles, wrinkle Botox is injected into the dermis, so I heard there is a higher risk of developing resistance. That is why I decided to get Xeomin Botox. They recommended Xeomin or Coretox for anyone concerned about resistance. It has been about a week, and it is fascinating to see that the wrinkles are definitely less pronounced and the effects seem to be gradually taking hold. They say the treatment cycle is every 3 to 4 months, but since the price is affordable and the results are 확실 (certain/definite), I plan to get injections on my forehead again in the future. If you are prone to wrinkles, I recommend giving Botox a try.