|syzygium cumini .image source :wiki. image in the public domain.|
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The leaves are dry roasted in a thick bottomed vessel till they get brittle. They are cooled and powdered. The powder is made into a thick paste by adding black sesame seed oil.The mixture is stored in a glass jar.
When this paste is applied on the affected area, the old burn marks slowly fade away. This cannot be used on fresh wounds.