How to Clean Retainers: A Step-by-Step Guide

It’s easy to underestimate the importance of retainer care – especially once the “active” phase of orthodontic treatment is behind you. But if you’re wearing a retainer (whether fixed or removable), it’s not a suggestion; it’s an ongoing part of your dental health routine. And knowing how to clean retainers properly isn’t just about fresh breath or avoiding discolouration – it directly impacts the longevity of the appliance and the health of your mouth.

Let’s be clear: retainers are in constant contact with your teeth and gums. If not cleaned regularly (and correctly), they can harbour bacteria, accumulate plaque, and even start to smell. We’ve seen more than a few patients return with irritated gums or new tartar buildup – not because their braces failed, but because their retainer hygiene did. 

Below, we’ve outlined a practical, no-nonsense routine for keeping your retainer clean – whether it’s a plastic Essix-style, a classic Hawley, or an Invisalign tray.

Daily Cleaning vs Deep Cleaning: What’s the Difference?

Before diving into the how, it helps to understand the what. Daily cleaning is exactly what it sounds like: a simple rinse and brush to remove debris, prevent odour, and maintain general hygiene. Deep cleaning, on the other hand, should be done a few times a week (or as recommended) to tackle hidden bacteria, stubborn stains, and mineral build-up.

Both matter. Doing one without the other? Not enough.

How to Clean Plastic Retainers and Invisalign Trays (Daily Routine)

These are often clear and snug-fitting – making any gunk or discolouration painfully obvious. Follow these steps:

1. Remove the retainer before eating or drinking anything other than water. Every time. No exceptions.
2. Rinse under lukewarm (not hot) water immediately after removal. This helps prevent dried-on saliva and plaque.
3. Brush gently using a soft-bristled toothbrush. Don’t use your regular toothpaste – it’s too abrasive and can scratch the plastic. Instead, opt for a mild, unscented soap or a cleaning gel made specifically for retainers.
4. Let it air dry fully before storing or wearing again. Avoid leaving it in a sealed container while wet – that’s a fast track to bacterial growth.

We occasionally meet patients using mouthwash to clean their retainers – please don’t. Most mouthwashes contain alcohol or dyes that can damage or stain the plastic over time.

How to Clean Hawley Retainers (Daily Routine)

Hawley retainers (the ones with the acrylic base and metal wires) are more durable, but they still require careful cleaning.

1. Start with a gentle rinse under lukewarm water.
2. Use a soft toothbrush and gentle dish soap or retainer-safe cleanser. Brush both the acrylic and the wires, taking care not to bend any components.
3. Check for mineral deposits. If you notice white, chalky spots that don’t come off with brushing, it’s time for a deep clean (see below).
4. Dry completely before putting it in its case. Moisture + closed container = bacteria buffet.

How to Deep Clean Retainers at Home (2–3 Times per Week)