I use yellow bee's wax in some soaps. It's a little tricky to work with, it tends to gum up on the sides of my ss pot, if you cool your oils in a cold water bath in the sink like I do. So you have to keep taking it out and stirring it off to remix it, gums up on the bottom.
Then when mixing oils with the lye water you get what they call a false trace its the wax gumming up, I just keep mixing, eventually it thins then forms real trace but it can be confusing the first couple times. And while your mixing you will notice it keeps sticking to the sides of the mixing container and you have to keep pushing it down and back into the mix.
It does make a nice harder and sorta silky shiny bar for me. I think its worth the aggravation lol.