How to clean a toothbrush: your guide to manual toothbrush care

Now that you understand the importance of appropriate toothbrush care, here’s our quick guide to how to clean a toothbrush after you’ve brushed your teeth:

1. Rinse using clear, running water. Running your manual toothbrush under clean, hot water after every use will help to remove toothpaste residue and bacteria.
2. Shake the brush. Gently shake excess water off your toothbrush after rinsing. If your brush is left too wet, bacteria may settle into the bristles.
3. Allow it to air dry. To help protect the toothbrush from germs settling, leave it to dry in a glass or toothbrush holder with the head up. 

While these steps will give you a quick and easy basic clean, you should ideally also sterilise your toothbrush head.² Rinsing your brush head and then soaking the bristles in an antibacterial mouthwash for 20 minutes is an effective way of eliminating bacteria.³ Once you have sterilised the brush, follow the above three steps to rinse it clean and dry it.

How often should you replace your toothbrush?

How often should you change your toothbrush? The NHS recommends that you change your toothbrush every three months, whether you’re buying a new manual toothbrush or switching to a new electric toothbrush head.⁴

This figure is a helpful guideline. In some cases, though, you may need to replace a toothbrush sooner if you notice signs that your toothbrush has reached the end of its life.

Now you know how often to change your toothbrush under normal circumstances, let’s look at what signs might suggest that your toothbrush needs to be replaced.

Top 4 indicators you need to change toothbrush

Following the correct method for how to clean your toothbrush head is only half the story. Eventually the bristles become less effective and it’s time to change your toothbrush – but how can you tell when it’s time?

The three-month guideline for how often to change a toothbrush head is useful, but you may sometimes find that your toothbrush becomes worn out before the three months are up. There are a number of indicators that you should change your toothbrush: 

• The bristles start to look ragged.
• Your toothbrush starts to smell, even after cleaning.
• Your teeth don’t look or feel clean after using your toothbrush.
• You’ve forgotten the last time you changed it.

Tip: Some modern electric brushes have a brush head change indicator light which will show when it is time to change the brush. The Philips Sonicare ProtectiveClean, for example, keeps track of how heavily you’ve been using the brush and lets you know it’s time for a replacement with a light on the handle, taking the guesswork out of how often to change a toothbrush head.

Tips to store your clean electric toothbrush or manual brush hygienically 

Now that you know how often to change toothbrush and how to clean it, you’re probably wondering how to store it hygienically in between uses and cleans. Here are some simple tips to help you properly store your fresh manual brush or clean electric toothbrush:

1. Always store your toothbrush upright. This will allow it to dry in the fresh air.
2. When traveling, use a toothbrush box. When you’re putting your brush or brush head into your bag, use a case to protect it from dirt and bacteria.
3. Don’t share your toothbrush. Using someone else’s brush – or allowing them to borrow yours – can encourage the transmission of diseases.⁴
   
   

As you can see, it’s a lot simpler than most people realise to clean an electric toothbrush or a manual one! With this guide, we’ve also set you up with everything you need to know about how often to change a toothbrush head and how to store it hygienically. 

Now you can be sure to have a clean brush and a clean mouth. After all, only a clean toothbrush can make your teeth clean and your smile healthy.