Kind to Skin Moisturising Handwash| Simple® Skincare- Simple hand soap ingredients ,The Simple 'Kind to Skin' Hand Wash is a fantastic product, especially if you have sensitive skin like me. My hands dry out easily and, despite regular use, this hand wash has not irritated my skin at all. It is really gentle on hands, thanks to the lack of harsh chemicals, artificial colours or perfume.How to Make Soap from ScratchSoap, by definition, is fat or oil mixed with an alkali. The oil is from an animal or plant, while the alkali is a chemical called lye. In bar soapmaking, the lye is sodium hydroxide.