I'm only 21 and I've got these lines by my mouth whenever I smile a lot. My two older sisters have the same thing, but someone told me it was dehydration. Me and my sisters never drank water, and I'm cutting out diet soda hoping it'll help. But any ideas? I'm desperate and so insecure
https://imgur.com/a/uf0NU
https://imgur.com/a/uf0NU