Oat Soak 100g Oat grain, or Avena sativa, is ground into a fine powder to make OatSoak. It contains lipids, proteins, vitamins, minerals, and other substances that have been proved to improve skin, making it an emollient—a material that softens or soothes the skin.Most people, including kids, can safely use colloidal oatmeal, except for those who have a confirmed oat allergy. Many people, including those with chickenpox, ageing skin, or dry skin issues, have found comfort from it.Great for relief with a number of conditions, including: Eczema Dry skin Dermatitis Psoriasis Shingles Chickenpox Sunburn Itchy Skin