This is the first time when I have used a magnetic nail polish and what I can say is that I am more than happy with the outcome! At first it was a bit tricky to not to put the magnet too close to wet nail polish and ruin everything, but I somehow got the hang of it very quickly! And you get the pattern almost immediately, like in 5-10 seconds!
So I therefore definitely recommend magnetic nail polishes!
This particular nail polish is from Bell, Magic Magnetic nr. 033 and it cost 3 euros, the magnet holder is also from Bell and cost 2 euros.