I just looked on Amazon, they have a product called Retro-Wash. Is this the same product?
It's made by the same company, but not quite the same product. Retro-Clean is used to remove stains from vintage linens and brighten them up; requires soaking. Retro-Wash is a regular laundry product designed to be gentle on vintage linens. Better information than I can provide is on their website:
http://retroclean.com . You can see they have separate descriptions for Retro-Clean (their original product) and Retro-Wash (the newer one).
Retro-Clean is also available on Amazon:
https://www.amazon.com/Retro-Clean-1...dp/B006UD22K2/