Thanks for your query.
Your problem is that of skin pigmentation.
First of all, you should stop using good remedies over the same. It might lead to increased pigmentation due to allergic reactions.
Some lightening agents have to be used in your case. I prefer to use milder agents to begin with. Something like kojic acid
cream is useful in such cases.
Use a sunscreen regularly to prevent further pigmentation.
You can contact a local dermatologist
in the problem still persist.
Hope it helps
Dr Geetika Paulr