this is very similar to seche vite without the shrinkage and Poshe. it's self leveling super shiney and makes your polish dry super fast.
it's sold at sally beauty supply but it's not on the website. Its not as expensive as poshe or seche vite BUT it is midrange.
I used rock topcoat the other day and like at midnight I ended up getting a dent in my polish. I was unloading groceries and a can hit my nail and really dented the crap out of it. I put this stuff on top and it leveled it out and my polish was dried thru in like 5 mins. (I had even cured my rock topcoat in the sun earlier that day when I polished my nails)