The Tantalising Toothpaste

I'm using this new toothpaste. It's not really that great. The taste is very bland. Anyhow, what's interesting is this line written on the tube: “You may experience brighter teeth and fresher breath.”

Now, that got me asking questions. What do they mean may experience? And even if I do, will the brighter teeth and fresher breath be mine? Or will I be experiencing someone else's? Dammit! I need answers...