Is wd 40 good for arthritis on hands?

No, WD-40 should not be used as a treatment for arthritis. WD-40 is a general purpose water-displacing industrial lubricant used to prevent rust on tools and materials, and should not be applied to skin. It is not a medical treatment and can be harmful if ingested or absorbed through the skin. Additionally, there is no scientific evidence to suggest that WD-40 can relieve symptoms or provide any benefit for people with arthritis. For arthritis treatment, it is recommended to consult a doctor who can prescribe appropriate medication and therapies.