https://reverb.com/news/how-to-clean-a-fretboard-basic-guitar-maintenance-tips
This guide will walk through the process for cleaning and maintaining three common fretboard varieties: unfinished wood, finished wood with unfinished frets, and completely lacquered necks. Be sure to look up your model’s specs before you start cleaning to ensure that you’re using the right products for your guitar’s fretboard.
