I'm on the hunt for the best pink so I ordered a bunch of pink samples. This is the first I've tried because who doesn't want to write with an ink called 'Hellfire?" I must say, this is definitely a"'highlighter" type pink, and I love it!! It's a real neon experience I wouldn't miss for the world. It doesn't have a lot of subtlety, but I didn't really expect much in an ink that's considered a highlighter color.
What it does is flow smoothly. I currently have it in my Waterman Kultur, which has in the past been a bit finicky about inks (it seems to dislike Diamine and Monteverde), but seems to love this one. The dry time is rapid (longest was about 5-6 seconds on a square I'd colored in), and it really packs a punch in the color saturation department. I'll be interested to see if it creeps as much as other bright inks have, but so far not much of a mess on the nib.
Overall, I'm very happy with this ink, and while I have a few others to try I suspect I'll want a bottle of this eventually, assuming it behaves well over time. Just a very fun color I'll enjoy using instead of red.