Environmental Advantages of Using Castile Soap If you are looking for natural soap that is good for your skin and the environment, then you can try Castile Soap. This soap is versatile and safe for the skin and the environment. It is proven effective in managing some delicate skin conditions such as skin sensitivity, rashes, psoriasis, eczema, and other skin conditions. Check out this Castile soap collection from a reputable Castile soap shop in Singapore!