Welcome to MFK were we have the biggest fan base for prime conditioner in the world. 
I myself buy sodium thiosulfate. And mix my own.
Actually everyone uses ST but 99% of people NEED that bottle with fancy printing to feel safe.
Do your own research and don't beleive the hype is all the advice I can give.

I myself buy sodium thiosulfate. And mix my own.
Actually everyone uses ST but 99% of people NEED that bottle with fancy printing to feel safe.

Do your own research and don't beleive the hype is all the advice I can give.