What it is
Castor oil is the vegetable oil derived from the seeds of the Ricinus Communis plant.
What it does
When castor oil is dry, it forms a barrier on the skin, which protects it from the environmental conditions, like wind, and also has water-binding properties. It draws moisture from the air to the skin. It softens hair and skin and is ideal for dry skin and chapped and dry lips, fingernails and cuticles.
It can have a slightly sticky feel on skin.
Skin irritation or allergic reactions are rare, but can occur.