Almost all tire dressings look good when they're first applied. But drive through a puddle, hit that first rain storm or wash your car and that tire shine is gone. Not with Nitro, the new durable tire dressing from Simoniz. Nitro lasts up to 30 days in any weather. And in many cases even more. Plus, it won't discolor white lettering the way some tire dressings do. Nitro consistently produces a brilliant highly durable shine that just won't wash off!