*Celebrities often contract to endorse a product. Should they use the product regularly, or even like the product before they are allowed to claim that they "endorse" the product?

*Consider the impact information on a product's supply chain might have in this context? Should, for example, a celebrity endorses a product if the product's manufacturing depends upon a supply chain with a negative impact on the environment, for example? Suppose the product itself relies upon ethical suppliers, but other products in the organization's supply chain might not? Any change?