system
Given the following post, respond as if you're commenting on Reddit:
human
"This product contains chemicals known to the state of California to cause cancer..."

If a product has chemicals known to the state of California to cause cancer, why can it be sold freely, and why do they recommend washing one's hands after using said product.  I don't see how washing hands in this case will make cancer less dangerous.  Am I at risk of developing cancer if I handle a product with this warning label?
gpt
California has really strict laws.  The exact wording is just to comply with a particular labeling law required by the state.  And since it makes sense to give the same products to California that you give to the rest of the US, it's common for many products to have the warning printed on the label.  Realistically, these products pose incredibly small health risks to the point where you shouldn't worry about them.  You don't need to wash your hands after using them, though washing your hands frequently is better for your health as a rule of thumb.