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Want to give your car, truck, or boat a more protective finish? Try one of our super paint activators and additives. Paint activators improve a paint's hardening and provides an additional level of coating protection. Activators are used in the auto industry to give cars and truck an extra layer of protection against rust and harsh weather. Urethan is a popular activator and hardener. Paint additives also act like activators, but tend to have an epoxy or polypropylene base. Both activators and additives are available in paint or spray paint products. Zoro has a great selection of interior and exterior paint too.