1. Brushing Too Hard

We tend to associate brushing harder with brushing better. But aggressive scrubbing wears down enamel — and once that layer thins, stains become more visible. It can also lead to sensitivity and make teeth appear darker over time.

Pro tip: Use a soft-bristled brush and light pressure. Your gums and enamel will thank you.

2. Skipping Water After Dark Beverages

Coffee and wine are obvious culprits. But what most people miss is how long those pigments sit on your teeth. If you sip and carry on without rinsing, you're giving stains time to settle into the enamel.

What helps: A quick rinse with water after your morning coffee or evening red can make a huge difference.

3. Letting Your Mouth Dry Out

Dry mouth = less saliva. And saliva plays a major role in neutralising acids and washing away debris. Without it, stains and bacteria stick around longer.

What to watch: Mouth-breathing, certain medications, and even sleeping with your mouth open can all contribute. Stay hydrated and consider sugar-free gum to keep things flowing.

4. Eating Highly Pigmented Foods (Without Thinking Twice)

Blueberries, beetroot, soy sauce, tomato sauces, turmeric — they’re all delicious, but also highly pigmented. Over time, even “healthy” choices like these can contribute to staining.

Doesn’t mean you need to stop eating them — just be mindful. Even swishing water afterwards helps reduce their impact.

5. Only Whitening When It’s “Bad Enough”

Maybe the most relatable habit of all: waiting until your teeth look noticeably yellow before trying to whiten them. But this “rescue mode” approach usually means you’re working against built-up stains, and not actually preventing them.

The fix: Whitening works best when it’s part of your regular self-care, not just a once-a-year emergency measure.