I clean and refurbish a LOT of guitars. Just this week I have revived 4 guitars that were otherwise cast off as useless. One thing they all have in common however, is that all of them were cleaned using the Dunlop 65 Maintenance Kit. (Disclaimer: I am not endorsed, sponsored, or anything else by the aforementioned company)
Each one of the sprays and oils have their own strengths and all of them do exactly what they say. I have developed a method by which I can turn a flea market cast away into gem, and this 65 system makes it easy!
My personal favorite is the deep conditioner. On a rosewood fretboard, this oil causes the deep richness of the wood to breath again. If you are in need of a great cleaning system, give this a try!