Oats are among the many members of the grass family, which together provide a staple diet for most of the world’s population. Wild oat seeds dating back to 2000BC have been found in Egypt. The oat grain in its natural state takes a long time to cook, so they are usually rolled and flattened into flakes, as this makes them easier to prepare.

- When soaked in warm water they become soft and produce a rich, soothing milk.
- They contain polysaccharides which become gelatinous when mixed with water and leave a protective film on the skin.
- They contain avenanthramides, compounds which act as antioxidants and are associated with the soothing properties of the grain.
- Whole or finely ground, they also make a very gentle exfoliant when applied to the skin.

A moisturising and replenishing oil can be extracted from oat kernels. It contains ceramide, a lipid that can be naturally found in the epidermis, creating a barrier on the skin alongside sebum to protect it and maintain moisture. Applying an oil with ceramide, like oat oil, helps restore and strengthen the skin's natural defence.