Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand..
As per your complain it seems like generalized pigmentation of skin leading to darkness of skin..
It can occur due to a number of conditions like excessive sun exposure,hormonal imbalances, side effect of medication, excessive exposure to chemicals or heat, acne etc..
You can start washing your face with
Salicylic acid or
Glycolic acid containing facewash..
Apply
Kojic acid containing creams along with glycolic acid and arbutin containing creams as they help in reducing pigmentation as well as safe for long term use..
Apply
vitamin E oil or gel at night..
Scrub your face using a gentle scrub twice a week.
Apply sunscreen lotion when exposed to sun..
Take Vitamin C supplements and drink plenty of water..
You can also go for galvanic facial, photofacial and
chemical peels..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.