Proposition 65 is a law that requires all businesses to provide warnings to customers in California about significant exposures to chemicals that cause cancer, birth effects, or other reproductive harm.
As an ecommerce business owner, it's your responsibility to inform all your customers in California if the products you sell contain any of the chemicals mentioned in the Proposition 65 warning list. Customers need to see this information before they make a purchase.
These are the Printful products that contain the chemicals on the list:
Any Printful shipment with these products going to a destination in California includes a warning on the packing slip, notifying the recipient of the presence and potential effects of these chemicals.
Nevertheless, you're responsible for informing your customers about the chemicals before they make a purchase. For more information about your responsibilities in relation to Proposition 65 go to https://www.p65warnings.ca.gov/.