I use 2% SF as I have hard water and soap scum is my mortal enemy. I am debating on dropping that to 1% as you really only want enough to prevent a lye heavy soap. I may even go down to 0% if I can convince myself to not "test" early. But I tend to start using bars at 4 weeks, just to test mind you.
That oily residue feeling is why I put all of my soaping dishes in the dishwasher. That detergent gets it off better than anything else I have tried.
That oily residue feeling is why I put all of my soaping dishes in the dishwasher. That detergent gets it off better than anything else I have tried.