If you read the ingredients the powders are exactly the same as the attraction range so you can just use your attraction powders with the system
Thanks pinknsparkly, yeah shortly after my original post I checked the ingredients of my Attraction Powders and found that too, so good to know.
Also, when I did my first set I had a sneaking suspicion the look, feel and smell of each product/step were almost identical to other NSI products so I since checked the ingredients for each "step" from the Safety Data Sheets, compared each and found the following:
Simplicite Prep = NSI Nail Pure Plus
Simplicite Bond = NSI Balance Bond Primer
Simplicite Polygel = NSI Polish Pro Base Coat Plus
Simplicite Polydip Powder = NSI Attraction Acrylic Powders, Technailcolor Powders (and probably more)
Simplicite Seal - I couldn't find an exact equivalent but it has very similar ingredients to NSI Polish Pro Top Coat.
They'd probably say the Simplicite Dipping Powders are more finely milled but to be honest I can't tell the difference between Attraction, Technailcolor vs Simplicite. Maybe more pigmented? Jury's out on that one.
Also I'd gather SNS and other dipping brands would work with this system as well, considering all the powders are just finely milled Polymers.
I'll make one thing clear though, (before others jump on what I wrote above) although I found these equivalents, on a client I would not substitute the Simplicite steps with other NSI products, I would use the complete system as it's a lot more professional than mixy matchy.
On myself though for personal use I'll definitely be trying my Attraction Powders and Technailcolor Powders.