Laundry Detergent (dry) I know a lot of recipes out there called for Fels Naptha but having sensitive skin, I went with Ivory. (Those who wash baby clothes, Equal parts of: baking soda, oxygen cleaner, washing soda.) The Bath salts are for water softening and fragrance. If you want unscented, simply use Kosher or Sea Salt. Microwave a bar of Ivory for 90 seconds. It puffs up like a cloud. Cool for 10-15 seconds the soap will crumble in your hands and turns out baby powder fine!