This happens whenever I use a moisturizer and Im scared its going to leave hyper pigmentation. Its hard to tell in the photo but I feel like if I smile, the whole chin/under mouth area is going to crack and sting. Should I just give up on moisterizing even though my chin is usually dehydrated? I drink near a gallon of water a day and it feels best when there is water in my mouth. Moisturizers I have tried are complex 15, nutragena oil free (combo, sensitive, and spf), and clean and clear dual action. Thank you for the replies!

here is the pic