Good for first use, a lot dried out after that.
598411
I used these one time, loved them. Next time I went to use them 2 of them were dried out and almost all of the rest significantly lost their color since the last time. Just disappointing.
227826
The markers were rather dry when we received them.  Had to throw out a bunch within a week or so.
734101
They're ok for a "onetime" use, but not real great quality for beyond that application.
2118575
The viscosity is very high. You need to shape the coating layer very fine before it becomes fully dried.
1897695
First time I used it I had to rinse it off. I dried it as best I could but it completely rusted over.
2940026
dried up very quickly, but liked somewhat their texture on using.
4452569
The container is SO FLIMSY that after using some and closing it, I went back later and found much of the goop had dried up. I had to transfer this to another container and it was a mess. I can only hope that it won't dry out entirely over the course of time.
3805122
I read the other reviews that said the ink dried up, but thought that I'd give it a shot because the price was so great. I should have bought a new ink pack instead of the remanufactured cartridge because after not using my printer for a week the ink has dried, and even though the cartridge is full, my printer is printing pages with very faint coloring. Spend the extra money. If you don't you will still need to buy more ink when it eventually dries.
1589037
I got this to help maintain the plants in my fresh water fish tank.  After the first use, I washed and thoroughly dried the tools.  They're already rusting.  I don't think these will last too long if they're already rusting after just one use.
4723504
Puttered out at the end, but good for a first attempt
780401
This arrived at my house and when I went to use it a couple of weeks later, I realized it was all dried out. I had to throw it away, but should have asked for a refund.
4202676
Upon using for the first time, one bottle worked, the other leaked.
350385
I worked well the first time, but when I wanted to use it a few days later, the liquid had hardened inside the nozzle.
So, great for a one time use, but I need to try to unclog the nozzle to use it again. I hope it doesn't clog every time....
4948173
Good for the first few projects but dries out faster than usual.  Like the line use and flow.
953237
Once these are un-capped for the first time, they dry up in two days.  I don't get it.  I need ot look at the caps more closely to see if they are cracked.  I've had this issue with all 5 of the ones I've used.
3224046
These highlighters are very light, which I like better than the neon kind. However, I only used them a few times within two months before they were dried out and useless. I had them stored in their original case in a dark desk drawer.
3589164
It was fine when I first received it, however, over time it seems to have dried up.  I am very disappointed in this product.