@realbehindthechair: Are you using baking soda and lemon to whiten your teeth? Stop right now! 🛑🍋 This viral DIY internet hack is actually destroying your smile. Your teeth have layers. The thin outside layer is your beautiful white enamel, but the thick layer underneath (dentin) is naturally bright yellow! Baking soda acts like rough sandpaper, and lemon juice is a highly corrosive acid. When you scrub with this toxic mixture, you completely melt away your white enamel. You aren't whitening your teeth—you are making them permanently yellow and insanely sensitive! 🧊⚡ Leave the whitening to your dentist and hit SUBSCRIBE for more dental secrets! 🦷✨ #dentist #teethwhitening #teeth #diywhitening #dentalfacts