Each Sea Sponge Spa Soap is made with a natural sea sponge and can be used daily to cleanse and exfoliate the skin. Bean'Stock soaps are handmade and artfully created using the finest ingredients. All soaps are glycerin based and contain no animal by products. Each Sea Sponge Spa Soap is made with a natural sea sponge and can be used daily to cleanse and exfoliate the skin. Glycerine is considered a humectant, which means that it attracts moisture. Because of this quality, glycerine soaps draw moisture to the skin and holds it there. As a result, it provides constant hydration to your skin. You've probably noticed that some soaps dry out your skin, leaving it tight, flaky and sometimes painful. However, glycerine soap is extremely moisturizing. Its unique moisturizing properties allow for your skin to remain hydrated for several hours after use. Using glycerine soap in your daily routine can aide in softer, more supple and hydrated skin.