Has anyone DIY'd the King of Skin?

Hi friends,

My partner has psoriasis and the King of Skin did great things for him but it's a bit costly for how rapidly he goes through a bar.

Has anyone DIYed this one? I have experience making similar body care products (tempering butter and all) but I'm getting stopped up on the banana and avocado ingredients. I don't want to leave them out if they're actually helping his skin