Liver of Sulphur - durability

I only use this colouring on pendants and protect the finish with
hard drying car wax which can be buffed to a good shine when dry.
I find that although it looks fabulous on rings it wears off in
about a week. 

That is weird, because I have rings and pendants (that I have made
myself) that have LOS patinas and are years old with no wear. Of
course I don’t put any wax or other coating over the LOS finish.
Could that be why?

I finish the piece totally and then add the patina with LOS. Then, I
only buff with a polishing cloth to bring up highlights, etc.

Laura
Laura H. Hastings
Eclectica Jewelry
Tucson, Arizona
USA