"Triple-milled," refers to the production process that pushes the glycerin by-product back into the soap to make it gentle and mild. The three passes through the milling process also press fragrance in while squeezing water and air out. The result is a dense, long-lasting bar with fragrance that lasts to the final sliver. Caswell-Massey triple-milled soaps do not float. They are mild and gentle. Extruded soaps like Ivory have no glycerin, have lots of air, float and seem to melt quickly in the shower or bath. A 5.8 oz. bar of our Almond Soap can last up to one month in the shower. However, it may crack around the edges as it absorbs moisture. This is not a defect but a sign of a dense, triple-milled soap.