Suggest Treatment To Skin Tan

hello I am a pakistani and have a very fair skin as my mom told me that when i was born i was a very fair skinned baby.
But then when i got elder I began to get darker due to more exposure to sun. my mum told me that i had a very sun sensitive skin............so i need to protect myself from the skin.............But i never took attention to this.....................but then sooner began to realize this thing. So i put so many home made things on my face to remove this tanned skin.............but unfortunately they are having no affect on my face...........................I guess my tanned face have become permanent...............so dear doctor can i remove this permanent tanned skin?? if so then how?? Give me some home remedies.