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Can contact lenses melt? Here's what really happens in the heat

Man shields his eyes from the sunlight
The myth that just won’t melt away

If you're wearing contact lenses and the weather heats up, you might’ve heard whispers of a bizarre rumour: contact lenses can melt. It’s the kind of modern myth that spreads like wildfire, especially during a heatwave. But is there any truth to it?

Spoiler alert: no, your contacts won’t turn into a gooey puddle on your eyeballs.

Still, let’s dive into the science of it and clear up what really happens to your contact lenses in hot weather and how you can keep your eyes cool, comfy and healthy all year round, so you can buy contact lenses online without a shadow of doubt!

Why your lenses won't melt in the sun

Here’s the deal: soft contact lenses, including hydrogels and silicone hydrogels, are built to handle the natural temperature of your eyes, which sits around 35 to 37°C. The melting point of contact lens materials is well over 100°C. That’s boiling water territory. Unless you find yourself in a volcano or accidentally sunbathing inside an oven, your contact lenses aren’t melting anytime soon.

Box of everclear ELITE contact lenses on a table

What extreme heat actually does to your lenses

So while your contact lenses won’t melt, they can dry out. And for contact lens wearers, dryness is a much more common issue, especially during hot weather, long flights, air-conditioned offices, or even while blow-drying your hair.Here’s what happens: dry air or direct heat draws moisture from your lenses. This disrupts your tear film and leads to dry eyes, eye irritation or even blurred vision. Not exactly ideal.To avoid eye conditions and discomfort, it's smart to:
Heat and hygiene: don’t forget your lens solution

It’s not just your contacts you need to think about. If you store your contact lens solution in a warm car or sunny windowsill, the heat can cause it to break down. That means less effective cleaning and more risk of eye infections. Your solution might not shout about it, but your eye doctor would definitely recommend keeping it in a cool, dry place, especially in the summer.

What about cold weather?

Good question. Cold temperatures aren’t known to damage your lenses either, but cold weather can still impact contact lens wear. Your eyes can feel drier due to wind, indoor heating or spending more time looking at screens. So whether you're battling a heatwave or a frosty breeze, eye care is key.

Woman wearing sunglasses and a sun hat

A few simple tips for happy summer eyes

Wearing contact lenses during a scorcher? No sweat. Just keep these in mind:
  • Wear sunglasses with UV protection to shield against UV rays and help prevent long-term eye conditions
  • Choose daily disposable lenses if you're travelling or spending more time outdoors – they’re ultra-convenient and often better for dry environments
  • Speak to your optometrist or opticians if you’re noticing any changes in comfort, especially in extreme heat
The verdict: lenses don’t melt, but they do need TLC

Contact lenses are a modern miracle: strong, flexible, and surprisingly tough. But they’re not invincible. Heat won’t melt them, but lack of care just might ruin your day. So, keep those lenses cool, clean, and hydrated. Your cornea (and your comfort) will thank you. And next time someone asks if contact lenses can melt? You’ll know the answer and have a great story to tell while you pass the eye drops.

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