What is up with my skin? Which laser if any will help? (photos)

So as you can see I have very fair skin that is senstive but I have this random ring around my mouth and under my nose. I am not sure if this is Rosacea (no familial history), some type of dermatitis, a food sensitivity, sun damage etc. I am interested in trying to even my skin tone or at least fading this ring around my mouth. Not sure what will help (if anything), skin bleaching, laser, peels, etc..

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