My aunt rubs a full cup of castor oil on her joints every night for arthritis. I worry it’s a bit much and could irritate skin. Thoughts?

Using a full cup of castor oil on the skin every night can potentially lead to irritation, especially for individuals with sensitive skin or allergies. While castor oil is known for its moisturizing properties, such a large quantity can create a barrier that might prevent the skin from breathing properly, leading to clogged pores or a greasy residue.

Some people may also be allergic to castor oil, experiencing redness, itching, or a rash upon application. Conducting a patch test before widespread use is recommended to ensure no adverse reactions occur.

Scientific studies on castor oil’s effectiveness for arthritis are limited, though there is anecdotal evidence and traditional use that support its anti-inflammatory properties. Some research suggests that topical application of castor oil can help reduce pain and inflammation, but more rigorous studies are needed to confirm these effects.