I bought them after I saw several girls using them and speaking good about them.
I bought them mainly for the one stroke nail art technique
I have not yet used them on my nails...but I tried them on fake nails and they are really more pigmented than the acrylic paint that I used before
I have them from a French website www.adnails.fr but these paints can be found anywhere on the internet
they are pretty expensive but they worth the money
I will come back in the future with an update and I will tell you my opinion