Selfie Ready on the Cheap: Whiten your teeth for under $10. I use this routine twice daily and I swear by it. 1. Rinse with Equate's Whitening Pre-Rinse 2. Brush with a mix of baking soda + hydrogen peroxide + a slice-in-your-water's worth of lemon juice (I don't sweat exact measurements, just make it to a paste-like consistency) 3. Finish with any whitening toothpaste. Because the mix can be abrasive, start with one use a day for sensitive mouths. Happy selfie-taking!