I recently made a batch of soap that was too brittle to cut properly. When I went back over my recipe I immediately spotted that I had mis-written the amount of lye required. So not only do I have a lye heavy soap; I know exactly how lye heavy it is.

My base recipe is usually:

Olive Oil 450gm

Coconut Oil 288gm

Shea Butter 162gm

Lye 125gm

However I have added 180gm of lye by mistake. :headbanging:

Now I can't work out how much of each oil I need to add in a rebatch. It's maybe simple maths, but I'm not sure how to go about it. Normally I put the oil amounts in the calculator and it gives me the lye amounts. Not sure how to work it out the other way around.

Can anybody help me with this?

Thanks in advance

McB