Potassium permanganate , powder to water ratio?

As the title says, what's the recommended powder to water ratio, I'm only doing a couple of roe heads.
Thanks.
Assume you are painting antlers that have been bleached accidentally.
Using permanganate to recolour them, it will look a mess. "Professionals" use artist oil paints, orange, umbers and black. Using tea bags is another tip I have been told but not tried.

Stripping the antlers, after wasting time burying them and then using Sodium hypochlorite bleach, found it much easier using Dermastid beetles and no bleaching, so no errors.
 
Assume you are painting antlers that have been bleached accidentally.
Using permanganate to recolour them, it will look a mess. "Professionals" use artist oil paints, orange, umbers and black. Using tea bags is another tip I have been told but not tried.

Stripping the antlers, after wasting time burying them and then using Sodium hypochlorite bleach, found it much easier using Dermastid beetles and no bleaching, so no errors.

Whenever I have used PM they look superb
S
 
It’s powerful stuff - I’ve always just used a few crystals - enough to give a good strong purple colour but not black if that’s any help. Would suggest dipping rather than soaking till you get the required depth of stain.
 
I have used potassium perm in roe heads before. Make sure you cover the white skull, i wrapped them in cling film. Mix a weak solution, paint on and let it dry. It looks quite pale when you apply but colours up when dry. Slowly build up in coats to get the required colour
 
you can get a tidy finish with potassium permanganate, as above cover the skull, if you want to keep white tips, put Vaseline where you don’t want it covered- put skulls upside down so no run off onto skull.
 
Update.
Mixed half a teaspoon of PP with 200ml of water, took my time and applied 5 coats and the results are marvellous. Also tried the coffee method, and while it's OK, it's not as good as PP in my opinion.
 
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