Swimwear on drying rack

How to Prevent Swim Goggle Fogging

Why are my swim goggles fogging-up?

The fog you are seeing in your swim goggles is actually condensation. The condensation forms in your swim googles when your body heat climbs due to increased activity. Perspiration around your eyes raises the humidity inside the goggles, and then the colder water outside your goggles causes water droplets to form on your lenses.

Is there a way to keep swim goggles from fogging-up?

Yes, if you purchase high-quality swim goggles that are pre-treated with anti-fog coating your goggles should not fog-up. Read the product description to be sure the lenses are pre-treated.

Do you have any other advice for keeping my lenses fog free?

  • Don’t Touch Goggle Lenses: Keep fingers away from the inside of your goggle lenses or you’ll erode and smudge the anti-fog coating, causing it to lose effectiveness prematurely.
  • Use Anti-fog Spray: If your goggles are fogging, apply anti-fog spray to restore an anti-fog coating on your lenses. One product that gets good reviews is JAWS Quick Spit 1 oz. Anti-Fog Spray Formula, available on-line at Swimoutlet.com, Amazon.com and other water sport retailers.
  • Sloshing: Keep a little bit of water in each lens, allowing it to slosh across your goggle lenses as you swim. This is annoying, but will suffice in a pinch.

How does goggle Anti-Fog work?

Swim goggle anti-fog is a surfactant that lowers water droplet surface tension, causing it to spread easily in a process known as “wetting”. Wetting prevents water from scattering into droplets, so – no fog.

I’ve heard if you spit in your goggles that will keep them fog free, is that true?

Spitting in your lenses, followed by a quick shake, will temporarily abate fogging. However, repeatedly stopping your swim to fill your goggles with spit gets old – and attracts odd glances.

See more at: Keifer.com

My Swim Goggles

My Swim Goggles

UPDATE: 9/20/2015

After I  published this I did some additional research. What I wrote above pretty much sums up what all the professional bloggers say about preventing swim goggle fogging. I wondered if actual swimmers agreed, so I checked out a couple user forums. According to actual swimmers, these products do work for some, but there are inexpensive alternatives.

What Swimmers Say:

  • Buy the cheapest goggles that fit your face and replace often
  • Use a new or nearly new pair
  • Spit in goggles to keep them clear
  • Use baby shampoo. One drop in each lense, rinse with pool water, swim
  • Swim with a bit of water inside goggles
  • If you buy goggles with anti-fog coating:
    • Keep from touching the inside of the goggles for as long as possible – when you touch the inside you remove the coating
    • Don’t get the inside of your goggles wet with chlorinated water. It eats away the anti-fog coating
    • Re-coat lenses with anti-fog spray or drops, be sure to rinse them well as these solutions sting the eyes

So it appears to me the blog writers are attempting to drive traffic to on-line retailers that sell anti-fog products.

Julia’s advice:

  1. Buy goggles that fit comfortably
  2. Do not wet new goggles before use – put them on dry and swim
  3. Always rinse goggles well with fresh water after swimming
  4. Allow goggles to air dry before storing
  5. If goggles come in a carrying case, great – use it. If not, I suggest storing your goggles in an old sock to keep other items in your bag from scratching them and to allow some air flow

Once you start having fogging issues try the spit, or baby shampoo suggestions or do what I do . . .  I leave a little water in my gogles and let it slosh while I swim or I just put up with the fog. I wash my goggles with baby shampoo when I think they are dirty. I replace my goggles when they get enough scratches that I can’t see well.

Swimwear on drying rack

Work wear on drying rack

How to Wash your Goggles with Baby Shampoo

Before you swim:

  • Wet your goggles on the inside with tap water
  • Put a drop of Johnson’s baby shampoo on each lens
  • Swirl it around with your fingers and make bubbles
  • Rinse thoroughly with tap water but don’t dry your goggles
  • Swim

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