The last time I bought Scholl Concepts polishes I bought too much S17+ and not enough S3 Gold so if anyone wants to swap a full 1Kg bottle of S3 Gold or S20 Blue (which I haven't tried yet) for my full 1Kg S17+ let me know. My polish has been stored in a dark, cool (roughly 55F - 65F) space and is about a year old.
When does one use S17+ and S3? I know not at the same time. I cannot find a decent product flow chart at the moment. Sent from my mobile device
S17+ - Similar to Menz PowerFinish S3 - Cutting Compound, PF400 S20 is a good product, I think you'll like it if you can get it in trade.