You can usually see results immediately after your teeth whitening treatment at the dentist — often in just 1 hour! 🦷 Here’s a simple breakdown: In-office whitening treatments (like Zoom or laser whitening) work instantly. Your teeth can become 6 to 8 shades whiter in just one session. Some people may need 2–3 visits if they have heavy stains or discoloration. ⏱ Timeline: Right after treatment: You'll notice a brighter smile. Next 24–48 hours: The results may even improve slightly as your enamel rehydrates. Lasts: 6 months to 2 years (with good care). 📌 Tip from the Best Dentist in Delhi: Avoid coffee, tea, red wine, or smoking for at least 48 hours after whitening to prevent new stains. Want to know how to maintain your white smile longer at home?