I heard that it also reduces the size of the back cheek area. Is there anyone here who has done this?? There really isn't much information here compared to making ㅁㅇ. There's no place to search..... It's frustrating ㅜㅜㅜㅜㅜㅜ And they say they only do mouth surgery here, but mouth surgery is bound to cause sagging cheeks, right??