Colloidal oatmeal (Genus Species name, Avena sativa L) is finely ground oatmeal. Oatmeal and its natural oil coat, moisturize, protect and gently cleanse, while correcting the pH of itchy or inflamed skin back to normal. When added to baths, colloidal oatmeal soap doesn’t clump; it spreads out and melts into a cloudy treatment that can relieve skin irritations. Colloidal oatmeal is not a food product and should not be ingested; do not apply to eyes.