The guitar can be finished with different varnishes.
The finish is thin, durable and acoustically compatible.
The best way to preserve the finish is to keep it clean by wiping sweat, fingerprints with a soft, damp (not wet) cloth.
There are many guitar cleaners available, a rag slightly moistened with tap water and wrung out thoroughly will remove most of the dirt.
Then dry with a clean dry cloth.
Attention: If you need to use commercial products, avoid those with solvents, silicones or abrasives.
The Fretboard can dry from time to time, to restore use only a small amount of oil (carefully polished).
If you want more information or product information, contact me.
The safest long-term case for your instrument is in its case.
* If you travel or you won’t play the guitar for a longer period, I always advise you to detune the strings to reduce the tension of the top of instrument.