Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that skin darkening on the exposed areas of your body like face, neck, hands and arms is due to sun exposure causin
Sun Tanning..
As you might have used sunscreen lotion once the tanning has already occurred then the sunscreen lotion cannot help you..
Do not worry, the first thing that you have to do is to keep using sunscreen lotion containing SPF 50 whenever you go out into sun..
You can wear full sleeved shirts.
If possible cover your face with scarf..
You should exfoliate the tanned and dead skin using a mild face and body scrub atleast twice a week..
You can apply creams containing
Kojic Acid,
Glycolic acid and Arbutin to improve the skin tone..
Take
Vitamin C and
Vitamin E supplemnts, apply Vitamin E oil at night and also do cool compresses over face and neck and also arms..
Drink plenty of water..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..