Hi ! iqra raza,
Welcome to HealthcareMagic forum,
If your complexion is genetically dark then it would be difficult to lighten it.If not then probably some cream might help you.There are certain procedures also which might help you.Most important of the lot is to use a good SPF sunscreen daily .I would recommend you UVAVO daily three times full face.Also use a wide brimmed good looking hat when you step out in the sun.Apply glycolic acid
cream 10% at night full face .Star using this cream by gradually increasing the time of contact.You can also go for glycolic peeling and microdermabrassion procedures at some reputed clinics.