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Originally posted by erwalker
Originally posted by Cancerwarrior
Ken East (one of the original founders) says there is nothing in WD-40 that would hurt you. The basic main ingredient is fish oil.
Actually, the main ingredient is mineral spirits, not fish oil. WD-40 Facts and Myths
It is also incorrect to say that it can't hurt you, though it is pretty safe if used properly.
Every chemical product used in the workplace must have a Material Safety Data Sheet (MSDS) placed in a readily accessible binder. They contain far more information on the chemical product than you will find on a consumer label, including chemical composition, health hazards, fire hazards, handling and storage instructions, first aid measures, etc.
Here is the WD-40 MSDS
A look at the WD-40 MSDS (Material Safety Data Sheet) shows that the product contains petroleum distillates. Skin contact may cause drying of skin and/or irritation. According to the WD-40 MSDS, it is advised to wash with soap and water if you have contact with your skin.
Greater risks can come from prolonged exposure. According to the article, WD-40 for Arthritis? by Katherine Poehlmann, Ph.D., "To date, no credible scientific studies have shown any benefit from the use of WD-40 for arthritis. In fact, there may be cumulative harmful effects."