Here is a useful one and worth to be erected.
A third refret in 12 years leaves traces more and more easily on the ebony fingerboard, near the fret slots.
Despite the care used to minimize the wood chips when removing older frets, it is necessary to rebuilt the damaged area on the surface.
For ebony, I like to use a mix of wood powder and glue. Depending on the extent of the damage, cyano or epoxy as a binder give good results.
Once the surface leveled, and also over the time under the use, this combination, wood and glue, gives an look that is similar to the healthy surface.
For tough player on the frets, now with the Evo we will see in a decade who is the winner…