Is hypopigmentation in lips - my lips are naturally brown and have turned pink - permanent?

I am a black woman with dark lips. I have had a habit of biting and licking my lips simultaneously - my natural lip color started to fade away and turned pink. Would that be the cause of the discoloration? I don't take any medications. it could be post-inflammatory hyperpignentation. I would like to ask if this is permanent, will my natural brown lips go back to it's original color ever or in the least start to show sign of brownness? What will the hydrocortisone cream do?

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