Castor oil has been used in traditional wellness routines for generations. Today, it continues to attract attention online, especially in posts claiming that applying castor oil can relieve back pain, joint pain, and inflammation.
The image above shows castor oil alongside a castor plant and an illustration highlighting the back and joints. But how much of these claims are actually supported by evidence?
The answer is more nuanced than viral posts often suggest.
What Is Castor Oil?
Castor oil is a vegetable oil made from the seeds of the castor bean plant (Ricinus communis).
It has a thick texture and is commonly used in cosmetics, skin products, soaps, and some medicinal preparations.
Castor oil is also well known for its traditional use as a laxative when taken orally in appropriate medicinal products.
However, using castor oil on the skin for pain is a different question, and evidence for this purpose is much more limited.
Can Castor Oil Help With Back or Joint Pain?
You may see claims online that rubbing castor oil onto painful areas can eliminate arthritis, sciatica, or chronic back pain.
There is currently not enough high-quality clinical evidence to say that topical castor oil is a proven treatment for these conditions.
That doesn’t mean someone cannot feel temporary comfort after applying it. Massage, warmth, and the moisturizing effect of an oil may make an area feel more comfortable.
But that is different from proving that castor oil treats the underlying cause of pain.
