Colloidal oatmeal ek finely milled whole oat (Avena sativa) hota hai jo skin par laga sakte ho. Ismein beta-glucans, avenanthramides aur lipids hote hain jo skin ko moisturize karte hain, skin barrier ko strong banate hain aur irritation ko kam karte hain. Ye ingredient FDA ke hisaab se recognized skin protectant hai.