I've probably spent hours on a
lye calculator [Thanks Wholesale Supplies Plus: The only one I found immediately easy to use] plugging in various oils in different combinations to discover aspects which gave: hardness, cleansing ability, bubbles, conditioning, low linoleic and linolenic [to avoid DOS and possibilities of rancidity developing].
It is said you can fill a room with monkeys and give each a typewriter and eventually they'll type out a novel [or a dart board with the stock exchange listings on it and they'll create a profitable hedge fund].
If I get lucky and find THE recipe, it won't be my own skills but chance. And I'll share it with everyone. Likelihood: zero. Hope: infinite.
Ook ook.