Is this just the open string, or a particular fretted not, or an area on the board (if so where) or all along the length of the string? There are lots of possible causes, so it helps to know more about the buzz (and your picture failed to attach, so there are no visual clues for us to go on).
Graphite won't do anything for string buzz, it just helps stop strings sticking in rough nut slots and so aids tuning stability.
Last edited by Simon Barden; 31-08-2021 at 08:04 PM.
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