I've used it once so far, and it made my fretboard look fresh and feel better. Watch out, though, it's not meant to be used on finished wood.

The kit is great for the average guiatrist to maintain your fingerboard and doesn't want to buy a lot of cleaners and tools. But I buy it for the fingerboard oil. I have a lot of guitars and like to keep the necks clean and oiled, frets polished. If you have a rosewood, ebony, pau ferro, or bubinga fingerboard this is what you need to finish and maintain it. (or any board that isn't lacquered, i.e., maple) Re-apply it whenever the wood looks dry. It will never crack and it will feel great. I use it on brand-new unfinished boards, once it soaks in overnight it's dry to the touch but gives the wood a nice finish. I've used fingerboard oils as well, but those I have to order large quantities of and pay for shipping, etc. I can get this stuff right down the street in small bottles whenver I need more.

Used some of this on an old bass fretboard that had green grime on the frets and some sort of stains on the wood. It does take time and elbow grease to use but the result was a very clean smooth dark fretboard and the fret polishing paper even though it took a while to work did get the green frets back to a clean shine, GREAT product.

The instructions on the product indicate it is NOT for maple fingerboards. This is not mentioned anywhere in the description of the product on the website. It would have been nice to know this before I bought it.

I have a Gibson with a mahogany fret board and bridge. The bridge started to fade a tiny bit. I put both products on and it looks amazing and better than when I received the guitar brand new! It makes the wood dark and rich with color. It comes with everything you need and it doesn't smell at all. I did use a Q-tip with the first step to get in the tiny parts when the applicator built in to the bottle wouldn't reach. I will never use anything else on my Gibson Acoustic or my Fender Electric. (:

It pretty much does its job. The "6524 Fingerboard Cleaner and Prep" is a mixture of alcohol and something else, hence its smell and ability to evaporate quickly. If you're low on cash you can probably dilute some rubbing alcohol with water. The 6532 Deep Conditioner Oil is the most valuable thing to me in this package. It has a fuzzy applier tip, so you can invert the bottle and apply directly to the fretboard. I gave the product 4 stars because I think Dunlop should've included 0000 steel wool to be used with the 6524 Prep -- help get off any gunk on the fretboard without scratching the wood. They already have a fret polisher and a cotton cloth for the oil.