I've used this multiple times but haven't seen any difference. I thought it was a mask, but is actually a patch (as it's labelled, derp for me not noticing). I like to use two patches at the same time, one above the other so that they can cover my entire neck (front side anyway). I have a lot of lines and this hasn't made any improvements. I'm 32 and my skin isn't loose or anything there, so it's not like it's a lost cause XD Will not be repurchasing.