Hello, I Have A Dark Oily Skin , Its Get

Hello, I have a dark oily skin , its get tanned frequently and have recently developed pigmentation all over lips and chin area. Please recommend me products for my face care regime. Also I have allergy under my bust and underarms areas. Its develops as blisters and then its spreads in dark patches. During Summer they get swollen an its pains a lot even if water is used for cleaning.