Coconut oil can be quite harsh to some but there are lots of high coconut oil soaps that have a higher lye discount and are very conditioning.
(Emphasis mine)
Yes, what cdwinsby said. There are indeed some tricks of the trade that over-rule the commonly held soaping 'rules', 8) and using a higher superfat (i.e.- lower lye amount) with high coconut oil soaps is one of them.
You can make an awesome,
very hard,
conditioning soap with exploding bubbles by simply using 70% to 100% coconut oil and a 15% to 20% superfat level. Of course you'll want to make sure the other oils (if any) that you use along with the coconut oil in this kind of soap have long shelf-lives so that it doesn't develop DOS due to the higher superfat, but your picture of an umbrella in a coconut shell is quite attainable and
not a pipe dream.
I make such a soap quite often. Sometimes I use all coconut oil, and sometimes I lower the coconut amount to 70% and add different oils/fats/butters to make up the difference.
So far, I have had success with these additional oils/fats/butters making up the difference: cocoa butter, palm kernel oil, mango butter, kokum butter, illipe butter, tallow, avocado oil, and babassu oil. And I vary my superfat level anywhere between 15% to 20%. The more additional butters I use, the closer I get to the 15% superfat level. I have these kinds of soaps that are over a year old now and they have absolutely no DOS or rancidity in them.
I think it's time for some experimenting!
IrishLass