California Code, Business and Professions Code - BPC § 13741

(a) It is unlawful for any person or other legal entity to make any deceptive, false, or misleading statement by any means whatever regarding quality, quantity, performance, price, discount, or saving in the sale or selling of any commodity regulated pursuant to this chapter.

(b) Any manufacturer or packager of any product subject to this chapter and sold in this state shall provide, upon request, to a duly authorized representative of the department documentation of any claim made on his or her product's label.