If you get redness and pointy bumps around the mouth, it could be hormonal, it could be from your toothpaste, it could be from kissing a man with a beard. There are so many stimuli. The chin area is just very sensitive. If you're very dry there, put a layer of moisturizer ointment like Aquaphor on the area before you brush, then wash off afterwards. OTC 1 percent hydrocortisone cream will calm down redness, inflammation and scaling, but use it no longer than about a week, because if used for long period of time, it can cause thinning. Another thing I recommend for redness: if you use a sulfa-based dandruff shampoo, use a little on the inflamed area of your face; it should calm it down.
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