Hello dear, Welcome to healthcaremagic. I have read your query and understood your concern. You don t worry at all. You are talking to a dermatologist. Using natural remedies won t do any harm but if still is getting darker, you probably require additional treatment options. Various topical creams like kojic acid and vitamin C combination , arbutin, liquorice, glycolic acid etc are available. Besides this, chemical peels is also a very good modality for improving tone and complexion. As per details, this is my best advise for you. You may discuss this with your doctor. I am sure he/she will agree with this. Stay healthy.