I am intrigued by the pumpkin seed oil, especially as it's not an oil that comes up super often on this forum. Maybe it's because it's fall and almost Halloween, but I now have a strong urge to find some to try!
There are a couple things I'd like to add, just in case you weren't already aware (and if you were, feel free to tell me to pipe down), but 2 Tbsp of activated charcoal in 20oz of oil is likely to make for a gray lather and possibly some staining on washcloths. It did make for a beautiful, deep black, though! Awhile ago I read (
on the LovinSoap blog) that 1 tsp/ppo makes for a gray colored soap, and 1.5 tsp/ppo (=1/2 Tbsp) makes black, and it seems to be pretty true, at least from my experience.
The other thing is that it looks like your essential oil usage was at almost 9% ppo, which seems a little on the high side. A usage rate of up to 5% ppo (total, not for each oil) is more typical, with some oils needing to be used at a much, much smaller percentage to stay within the safe zone (i.e. clove, cinnamon, etc.). There is an online EO calculator that I love to use from Modern Soapmaking, which can be found
here, where you can put in the EOs you want to use and it will calculate how much of each one, taking into consideration their max usage rates. At the top there is a Search Blends tab, too, where she has generously shared a lot of great EO combos.
Anyhow, sorry for rambling and I hope if you try the yin-yang again you will share your results!