Chin area getting very dark. -12 (glyco!

My chin is getting very darker sometimes it's itchy so i rubbed after that it becomes very dark skin also peeling so I started noticed with light in that chin area at that time i can able to see many tiny white bumps with round shapes filled with fluid its giving sharp pain while i am touching particular place suppose i tried to broke that tiny bumps getting fluid after that place become wound it's giving irritation getting black again. I tried everything nothing helps i went lot of dermatologist they also suggested many ointments and cream at that moment getting results once I stopped to apply all those ointments again that place becoming black  so I started applying same ointments as per my dermatologist suggestion it's not working second time done with two salicylic peels.I am really worrying because of this i am losing my confidence. Please let me know anyone have solution for this.it will be really helpful Tried : Gulathoine face wash Ehigo face fash Ethigo serum GA -12(glyco