Let’s be honest – most of us hang onto our toothbrushes for way too long. Whether it’s out of habit, forgetfulness, or just sheer laziness, replacing your toothbrush often slips down the list of priorities. But here’s the thing: your toothbrush isn’t immortal – and using an old one could be doing more harm than good.
So, how often should you replace your toothbrush? Let’s dive into the answer, and why it actually matters more than you might think.
So, How Often Should You Replace Your Toothbrush?
According to dentists and the British Dental Association, the golden rule is:
👉 Replace your toothbrush every 3 months.
Yes, every 12 weeks. If you're using an electric or Sustuff toothbrush, simply swap out the heads just as often.
But don’t just go by the calendar – if your bristles are frayed, bent, or looking like they’ve been through a war, that’s your sign to upgrade immediately. Worn-out bristles aren’t effective at cleaning your teeth properly and can even damage your gums, leading to them bleeding.
Why It Matters
1. Worn Bristles = Less Cleaning Power
Frayed bristles can't reach between teeth or along the gumline effectively. That means leftover plaque, food debris, and bacteria – and nobody wants that.
2. Bacteria Buildup
Toothbrushes are the perfect breeding ground for bacteria and fungi, especially when they’re stored in damp bathrooms. While cleaning your toothbrush can help to extend its life, regularly replacing your brush helps keep your oral hygiene game strong.
3. Illness and Contamination
Been sick lately? It’s a good idea to swap out your toothbrush after a cold, flu, or COVID-19. You don’t want to reintroduce those germs to your system.
Bonus: Efficient Swaps to Reduce Waste
If the idea of tossing a toothbrush every three months feels a bit wasteful, we get it. That’s where better oral care options come in. Check out our recycled handles and soft bristles that are kind to gums and the environment, through reducing waste and plastic.
And don’t forget to check out our full guide on how to recycle your old toothbrush.
Quick Tips to Make Your Toothbrush Last (Well, Up to 3 Months)
- Rinse thoroughly after every use.
- Store upright and let it air dry – don’t shove it in a drawer.
- Avoid toothbrush covers that trap moisture and encourage bacteria.
- Don’t share your toothbrush (seriously, just don’t).
The Bottom Line
How often should you replace your toothbrush? Every 3 months, or sooner if it’s looking worn. Your mouth – and your dentist – will thank you.