Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain darkening of the facial complexion seems to be due to excessive sun exposure, exposure to heat or irritants regularly while can be due to side effects of skin cosmetics and it can also be due to hormonal imbalances..
I would suggest you to
consult a Dermatologist and get evaluated and a thorough clinical evaluation can be done while along with it a proper treatment can be advised..
You can be advised to apply
depigmentation creams like those containing
Kojic acid,
Glycolic acid and Arbutin..
You can also be advised to to apply creams containing Vitamin E and C along with Licorice extract and Grapeseed extract..
You can also exfoliate your skin twice a week..
You should also limit sun exposure and always apply a sunscreen lotion when exposed to sun..
You can also go for treatments like Photofacial,
Microdermabrasion and chemical peeling..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.