I have found recommendations on usage rates for adding exfoliants to cold process soap. But what if you want to use 3 exfoliants together? Say the recommendation is 1 tbsp ppo, do you divide the 1 tbsp by 3 OR multiply by 3? Do you know what I'm saying? With isolation, I'm limited to coffee grounds, poppy seeds, and corn meal. I'm looking to make gardener's soap. My memory is that @msunnerstood throws all but the kitchen sink in hers....and then loses it in her house.