First, it’s ideal to use a soap that is hypoallergenic, free of irritants and perfumes, said Dr. Dawn Davis, a Mayo Clinic dermatologist. Also, soap in bar form tends to have fewer chemicals and more moisture content.
Next, Davis recommends washing in comfortably warm water — not scalding hot water. Scrub between your fingers, including your thumbs, under your rings, the back of your hands and around your wrists. The same is true when rinsing.
“People forget about that and then soap residue stays between the digits or lies on the backs of the wrists and, over time, will get an irritant dermatitis from the soap residue that’s there,” Davis said.