Handmade Soaps Handmade soaps Contains glycerine which is a natural by-product of the soap making process, an excellent moisturizer and also one of the reasons that handmade soap is so good for your skin! Glycerine is an emollient which attracts moisture from the air maintaining moisture in the skin throughout the day.On top of being moisturizing, handmade soap achieves properties by having the correct ratios of plant-based oils and other natural ingredients.