If you're anything like most people, you’ve probably asked yourself at least once: “Wait, when did I last change my toothbrush head?” It’s one of those small self-care habits that slips through the cracks—until your toothbrush looks more like a worn-out broom than a dental tool.

So let’s clear this up. Here's everything you need to know about when to change your toothbrush head, why it matters, and how to make it part of your routine (without adding plastic to the landfill).

Why Changing Your Brush Matters

Your toothbrush is your first line of defense against plaque, bad breath, and bacteria. But when the bristles start to fray, they lose their ability to clean effectively. In fact, old bristles can start to damage your gums or harbour bacteria—pretty much the opposite of what you want from something meant to keep your mouth clean.

According to dental professionals, you should be changing your toothbrush (or toothbrush head) every 3 months. If you’ve been sick or you notice the bristles look frayed earlier, it’s smart to swap sooner.

Signs It’s Time to Replace Your Toothbrush Head

• Bristles are frayed, bent, or flattened
  

• The colour indicator (if present) is faded
  

• You’ve had a cold, flu, or infection
  

• It’s been 3 months—or more (no judgment)
  

Why Most People Don’t Replace Them On Time

It’s not laziness—it’s forgetfulness. Life gets busy, and unless you set a reminder, it’s easy to overlook. That’s why we recommend syncing it with a seasonal change or setting a recurring calendar alert.

How Nada Makes It Easy and Sustainable

At Nada, we created our refill system to make swapping your brush head feel seamless. Our brush heads are recyclable through our closed-loop program, and they click right into your durable aluminum handle.

Here’s how it works:

1. Swap: Pull off the old head (straight away from the handle—no twisting required), pop on a new one.
   

2. Send Back: Drop your used head into our prepaid return envelope.
   

3. We Recycle: We break down and properly recycle your heads so nothing ends up in the trash.
   

So every time you change your brush head, you’re also doing something good for the planet.

Pro Tip: Keep a Backup On Hand

You don’t want to be caught without a fresh head when it’s time to swap. We suggest grabbing a 3-pack and storing them in your bathroom drawer—so you’re always ready when your brush is not.

Final Thoughts

Changing your toothbrush head every 3 months isn’t just about hygiene—it’s about forming a sustainable self-care habit. And with Nada, you’re doing that without contributing to plastic waste.

So go on—check your brush. Is it time for a refresh?

Need a refill? Grab your 3-pack of Nada heads and stay fresh (and sustainable) all year round.