Preparing for summer sandals: Soften and Get Rid of Tough Calluses: blend two tablespoons of baking soda in a basin of warm water and add a few drops of lavender oil. After a nice long soak, scrub them away using three parts baking soda, one part water, and one part brown sugar. Follow with an application of a rich moisturizer and a warm towel foot wrap. Let sit for 5-10 minutes....