I've never tried avocado peelings, but I use the pureed flesh in my avocado/ cucumber soap all the time. I suppose if the peelings are not toxic or anything they'd be fine to use as long as you grind them up real well. Sounds like they'd make a good exfoliant, like pumice or something similar.
i've used pureed avocado (without the shell) and although i expected it to brown, so far it hasn't (six month and counting). have not attempted to use the peel, will be eager to hear how it turns out!
Keen to hear how it grinds up.
My first thought it might be too rough/sharp.
Pulped up avocado in soap works good for me. No discolouration yet either.
I used some green clay with it & it has a lovely earthy green colour to it.
I could never sacrifice an avocado to a soap recipe, I LOVE TO EAT them sooooo much. But the skins dried and ground could possibly be lovely! Always thinking soap, I like that :wink: