I have washed my water jewelry. We had 3 or 4 passes for either nickel or even more.
With this product, 1 pass is sufficient. I used pure ... I will try to dilute it a little (as stated in the manual).
I do not know if it is natural or organic, but there is no smell, it does not stick, it does not stain.
In summary, I still do not know how it works, but this product really works.