Teeth whitening can lose its brightness over time, but the treatment itself doesn't "lose effectiveness"—your teeth just naturally get stained again.

🦷 Here's why:

After the initial professional teeth whitening:

1. Teeth stay white for a few months to a few years.

2. But coffee, tea, red wine, smoking, and certain foods can stain your teeth again.

3. If you don’t maintain the results with good habits or occasional touch-ups, the whiteness fades.

✅ How to Keep Teeth White Longer:

1. Avoid stain-causing foods/drinks.

2. Brush and floss regularly.

3. Use a whitening toothpaste once or twice a week.

4. Get touch-up whitening treatments every 6–12 months (as advised by your dentist).

5. Drink colored beverages through a straw to reduce contact with teeth.

Final Tip:

Professional whitening gives the longest-lasting and safest results, especially when done by the Best Dentist in Delhi. But keeping that white smile depends on you and your daily habits.