EDIT: I think I have Dermatitis Neglecta. The rubbing alchohal dirt test and it being similar to terra-firma-forme dermatosis helped me figured it out. The dirt from my skin was coming from soap bar. I figured it out by using drain stopper to stop water from disappearing while washing my face with soap bar.
EDIT: Dermatologists confirm I have Acanthosis Nigricans. I'll leave this the way it is so anyone who runs into these symptoms can look into Acanthosis Nigricans.