Please don't be fooled by marketing ploys - there is no such thing as single stage chrome powder.
All chrome powders can be used as a single stage - but they lack proper UV protection and WILL oxidize over time.
If you look at the web site referenced in the last post, they recommend putting a clear coat over their "single stage". How can you call a powder "single stage" and yet recommend that you clear it
It's marketing jargon, and it's deceptive.
All metallic powders should be clear coated for best results and durability. The metallic flake in these powders corrodes if it's not protected.
Caveat emptor!