Hi, I trained with nsi and use their attraction system. I believe they do a “discover kit” which includes all the necessary products in a smaller size (gives u enough for 40 sets I think!) so you can try them out n see how u get on.
I’ve also used the Naio nails powders and max adhesion liquid which is also good, I’ll always use nsi for most of my work as I think it’s the best and I’ve alwasy used it with no issues.
Hope this helps x