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Best Anti Fog for Lenses? EK Cat Crap Anti Fog Review

Updated on September 14, 2019
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Provider of safety glasses for laser, radiation and glassworking / lampworking applications.

What Is Visor Fogging?

Visor fogging happens when warm, humid air contacts a cold surface such as your breath coming into contact with cold outdoor air. Warm air holds moisture better and when it cools the moisture creates condensation on your visor.

You may have noticed this on your windows at home on a particularly cold day - in the UK and some colder climates this can cause a problem. If you are wearing or using glasses it can become dangerous if you are moving or indeed using equipment.

As air cools, it contracts and its moisture condenses causing your visor to fog up and visibility to be reduced. There are several ways to reduce fogging on your visor.

How to Keep Your Glasses From Fogging

By wearing your glasses too close to your face you are preventing air from getting out past your lenses. If the hot air reaches the cooler lenses then fogging will most definitely occur!

There are several ways to manage it without using an anti fog coating on your lenses. Some people do not like the idea of putting a coating on their lenses so here are a few options below that might help you decide what to do! Some of them are a little bit out there but are tried and tested!

1. Clean your glasses with a small amount of shaving foam or cream.
This little hack can be very useful if you have no access or do not wish to use an anti fog coating. Most of us have shaving foam or cream on hand in our homes and it can be an effective way to stop that annoying fogging! Put a small amount on your finger rubbing it onto your lenses, use a microfibre cloth (or just a very soft cloth that won't scratch your lenses) and wipe your glasses clean.

I have also heard of people using shavings from a bar of soap, however depending on how sensitive your nose is, many might not want a soap smell lingering on their glasses all day. However it is an effective method of stopping fogging.

If you are looking for the best results let the shaving foam or cream dry onto your glasses, only wiping off any excess. This should help you to have created a layer of protection over your glasses which should last longer against changes in temperature.
2. Using a solution to clean your glasses can as a by product reduce fogging! Using 3 parts water and one part white vinegar, mix well and rub onto your glasses on both sides of the lenses. There should be no need to wipe this solution off, simply let it dry - a simple and cheap way of reducing fogging.

3. Pick clothes suitable for the outdoor rainy season.

Many of us bundle up against the cold of winter, however this can cause air to be trapped and a build up to cause fogging. Choose clothing that allows air to pass through and substitute your heavy winter scarf for something with a weave, allowing air to pass through. If removing or reducing the type of scarf you have is not an option then follow one of the steps above!

4. Simply move your glasses

Moving your glasses further down your face prevents a build up of hot air behind them, allowing more of an air flow between your body and the lenses and therefore will reduce fogging on its own.

5. Remove your glasses altogether.

This solution only works if you can see without your glasses on! But put simply, removing your glasses will allow the lense to cool down and fogging will become reduced and then stop. This solution will prevent marks or scratches as you will need to wipe your lenses less than before.

6. You can also practice patience when entering a building

Spend some time waiting in the doorway of a building and allow your glasses a chance to acclimatise to the new conditions.

7. Adjust the heating gradually

If you are in the car it can be very dangerous for both you and your passengers if your glasses become fogged. To avoid this increase the temperature in the car gradually which should prevent fogging. This is also true for your windshield. Fogging in cars is very dangerous and extra care should be taken if driving when this happens.

Anti fogging solutions

Cat Crap is an anti fog treatment for glasses manufactured by EK.

The treatment prevents the fogging of lenses and can be used for safety glasses, eye glasses, ski googles, air soft goggles, swim goggles, face shields, sunglasses and binocular lenses.

EK Cat Crap is available in both a balm and Cat Crap Anti Fog Spray and is safe to use on all lenses and coatings.

The difference?

Both versions prevent fogging of the lenses while repelling dust and dirt and can be applied with your fingers or a microfibre cloth.

Simply rub a tiny bit on to the inside of a helmet visor / lenses and buff it out, just as you would when applying a car polish. It is a green-colored wax-like substance that transforms into a near-liquid state as soon as it absorbs heat from your finger and will become transparent. You can see how to apply it from the video below.

When using anti fog products it is important to remember one thing – there is no fog proof remedy for anti fogging especially given the colder conditions of places like the UK but in my experience Cat Crap Anti Fog seems to provide the best solution to reduce fogging if you are seeking something to apply directly to your glasses. You can of course apply the other steps above which are known to reduce fogging and might be a cheaper alternative.

Fogging of Visors

As well as using anti fogging solutions you should always remember the below:

  1. A poorly vented face mask will always fog – remember to not breathe moist hot air into your glasses or faceshield.
  2. Reduce sweating as much as possible, which can create additional moisture around your face, fogging your lenses.
  3. Remember that the bigger the goggles or glasses the more airflow you will have within them. ‘Fit Over’ glasses or goggles are bigger that wrap around glasses and can help to minimise fogging.

What We Think.

EK have come up with a winner here – not only does it have a stand out name ‘Cat Crap’ meaning you will always remember the name but the product actually works in the way it is described. It has been the go to product for motorcyclists, air soft players and skiers for many years now but that’s not to say there aren’t other options, many of which perform well under similar conditions.

Some of those you might want to consider are Fogtech DX (available in liquid or wipe format) or Oakleys Nanoclear Hydrophobic Lens Cleaner which are both available through Amazon - however it is the cost of these products that makes Cat Crap simply just good value for money when a direct comparison is made.

The above products range from £9 - £16 for the liquid or lens cleaner with the wipes coming in around £1 each but depending on how many you use, this could be an expensive addition. We have noticed that the wipes do not last as long as liquid treatments and so we tend to prefer the liquid versions so purchasing wipes may not work out to be cost effective in the long run. But each person and situation is different.

What Others Think

Some of the feedback provided by users have been listed below. The feedback goes to show the wide variety of uses that Cat Crap is applied to.

Mary Tufts April 12, 2018

Best product ever for cleaning eyeglasses. After applying this product and following instructions for cleaning eyeglasses with it, your glasses stay clean for quite a while. It does not harm glass surface at all. You will be surprised after using this to see how much you have missed in your every day eyeglass sight. This is one superior product! I highly recommend it to anyone.

Ravi November 20, 2018
Rated 5 out of 5

My friend Shauna told me about this stuff after she noticed my difficulties playing tennis with humid and cold conditions. Game changer! Works great on my prescription lenses as I play competitive tennis. Thank you!

Conclusion

EK Cat Crap Anti Fog and Anti Fog Spray has been the best on the market for a while and still provides good value for money despite other manufacturers providing alternatives. The easy application with a finger or microfibre cloth is a great smear free way to apply the liquid and the results last longer than other methods. This product is a current favourite of ours at Safety Protection Glasses.

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