Do you have any tips or how do I get this to go away? It hurts (Photo)

My lips feel chapped and sunburnt and hurt after my braces. My braces have been on for 3 weeks and still no change. I use chap stick and neosuporn all the time with no reliefe. I drink lots of water. Do you have any tips or how do I get this to go away? It hurts.

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