Hi,
you won't get any thumbs up about Bluesky on here! Its kind of a cheap 'immitation polish', not a lot is known about what's actually in it, so most professionals DO NOT use it!
I did actually buy a Bluesky last year though, when i was just first starting out and was new to the whole gel polish craze, as I loved this particular colour.
It went on lovely, but faded and lost that glossy finish within a couple of days, and the worst thing...it took me AGES to remove. In the end, ruined my nails, as I had to pretty much file it off.
NEVER AGAIN. And I'm so glad I only used it on ME and not a client.
Cost me £5 so was very cheap in comparison to Gellux (which I now use and love btw) but seriously, I wouldn't bother.
HTH,
Sam