As far as I am aware, they no longer make it. It was pretty good from what I remember hearing, though some added additives to boost its cleaning power. Many people showed videos of incredible rinsing results.

Rosalie's web site and FB page are still up but state the product has been unavailable since March of 2019.

i always meant to try it but I kept procrastinating to order it. It did look interesting. I know it was made by the guy that refurbishes and collects vintage washing machines, John Charles.

Yes, Mr. Charles is one of the founding members of automaticwasher.org