Just thought i’d share this little nugget of instrument care wisdom. Gibson do a non aerosol spray polish for cleaning up your instruments. I fully recommend you grab a bottle of this for the next time you change the strings on your uke. It degunks any built up dust and grim without clouding or breaking the varnish on your instruments. The polish is safe for use on all types of finishes and has no unnatural chemical propellants or nitrates.
It also gives a slinkier feeling to any fretboard. Although it is unlikely to make much difference to the sound of your uke, it is still worth a few spray shots while you have the strings off to make your uke look and feel all brand new. Anyone who has opened the case of a new Gibson guitar will already recognise the smell of it too. Smells like rock and roll. I’m not sure why, but for some reason, Gibson seem to have left the word UKULELE off the label. Bah!