WD-40 has BECOME a brand. It was originally a product of Rocket Chemical Company., which became WD-40 company in 1969. The WD-40 company had only one product - so it was both a product and a brand. after going public in about 1973 it started aquiring other companies and brands, including 3 in 1 oil, Lava Soap,and other products, so it was still a product, and a brand - and now also a distributor of other brands and products. They have recently added new product and rebranded other product under the WD-40 brand - WD-40 Bike, WD-40 Specialist, Blue Works, etc - which has really "muddied the waters"