ColorTone Touch-Up Marker, Black Opaque Lacquer – Nitrocellulose Guitar Lacquer for Easy Finish Repairs – Fixes Scratches, Dings & Wear – Reversible Applicator Tip for Precision

It works really well. Easy to use, dries (or cures?) quickly and not sure what else there is to say. This lacquer pen gets the job done. Like earlier reviews suggest, practice a little on scrap paper or wood just to get a feel for it because the lacquer does dispense with little pressure. Great product!

Great touch up paint. It matches the spray lacquer and the pen gives exceptional control.

will fix blemishes some what

I know my use case is not for a musical instrument but for martial art equipment. I practice a martial art called kendo and the head gear uses black and red lacquer to ornate the menbuchi which is hardened rawhide. Sadly having a bamboo sword strike your protector over and over again during training the lacquer starts to chip over time as you can see in the before pictures. It is a pain to touchup and wasteful having to buy a bottle of lacquer paint to touchup the menbuchi. That is why these Coloratone touch-up markers are great. The black matched perfectly and very easy to use, the red on the other hand did not match the original color but I did not expect it to because color matching is very difficult if you don’t know the original color. I have to say this is the best menbuchi touchup tool for Kendokas to use and highly recommend it!

I tried using this to fill in the section of a guitar where the finish was removed the size being less than a quarter of an inch and it really didn’t do the job. I ended up having to find something else to fill in and use the spray can to finish the job

Hit my bass with the case and thought I had really damaged the body. It was severely cracked. I was told it would need to be professionally refinished. I don't remember how I came across this marker but after reading reviews I figured it was worth a shot. It worked better than I hoped. After a few tries I got the right amount of paint in the cracks. Then buffed with NuFinish Scratch Doctor with a soft cloth. It's for cars but I figured it would be OK. It smoothed out the finish and looks remarkably better. The only issue I had is I thought the finish was a blue to black burst but it's blue to very deep blue. Can only tell under certain lighting though and you have to look for it.

Fantastic stuff. Filled in some spots on my old Les Paul that really needed it. Great vintage color match on older nitro guitars

A lot darker than it should be, and it’s almost orange looking.