I can't find a link so not 100% sure it is a true story but I was told (from a normally reliable source) of a L'Oréal factory in Russia many years ago which was producing shampoo. Unknown to L'Oréal was the fact that at night the factory would run producing counterfeit shampoo with inferior products. L'Oreal found out when they started getting customer complaints from people losing their hair, and I think pulled from Russia.