Tired of yellow teeth but scared of harsh chemicals? Keeko's got your back (and smile). This dentist-approved pen uses natural powerhouses like bicarb soda and cranberry to whisk away stains, giving you up to five shades whiter teeth in just a week. Aloe vera and chamomile keep things gentle, while a minty twist leaves you feeling refreshed. Get whiter teeth in just 30 minutes, all in the comfort of your own home.