Hi, I've been making goat milk soap using 38% of the oils as my milk amount. I've been doing reading on using lye concentration instead. I was using 38% of the oils as the amount because I figured goat milk is actually an ingredient for me and I want there to be lots of it. I do the frozen milk add lye method because I have goats and want to use as much milk as possible. But I've been wondering if I could get a harder soap by using the lye concentration feature on soap calc, maybe trying 30%. Are there any goat milk soapers out there who can offer advice on how they decide how much goat milk to use? Does using lye conc make harder milk soaps, do you have to start worrying about the fat content of the milk if you use this method? Thanks!