First, stop whitening for a bit. Your teeth are screaming "time out!" Give them a vacation for a few days.
Try a little gentle "tooth exfoliation." Use a soft toothbrush with some anti-cavity fluoride toothpaste. Don't scrub like you’re trying to remove graffiti from a subway car. Gentle circles.
If you’re desperate, grab a little reminerializing gel or toothpaste (MI Paste is the secret sauce). Slap it on like you’re putting night cream on your face. It helps even out the mineral density.
Another weird trick? Rub a little coconut oil on the spots. It fills the porous areas temporarily. You’ll look glossy and slightly greasy, but the spots will vanish while you binge-watch your favorite show.
The "Cover Up" Approach (For The Impatient)
If you have a big event tomorrow and your teeth look like a map of a snowy mountain range, don’t stress. Just use a toothpaste with a little baking soda. It’s a mild abrasive that can scrub the "halo" effect off the surface.
Or, do the opposite. Eat something that stains evenly. A single bite of blueberry pie can tone down the contrast. I’m only half-joking. A cup of black tea makes everything look yellow again, but it also makes the white spots blend in better.
Your best bet is to just smile big. The white spots are tiny. People see your eyes and your energy, not the microscopic geography of your incisors.
Why Are There White Spots On My Teeth After Whitening Them - Infoupdate.org