There are guitar cleaners, polishes, tools and cloths on the market that you can buy from a music store. Some are made to clean the strings after playing, and some to clean and polish the body.
Using a specified guitar cleaning product is the best way to remove the fingerprints and smudges from your guitar and restore it’s shine. These products have been designed specifically to protect the delicate wood and finish of the guitar.
In a pinch, you may use a soft damp rag. Avoid using household cleansers or polishes, as they may damage the finish on your guitar.
Guitar Life 