Does soaking goggles with water before swimming really prevent fogging?

Some people often ask goggles experts a question. Since goggles have anti-fog function, why do you recommend using anti-fog agent? Before answering the question why it is recommended to use antifogging agent, let's talk about where the fog on goggles comes from. Goggles are fog-proof. Why use antifogging agent? In fact, the fogging principle of goggles is the same as that of automobile windshield. Because people's body temperature is higher than the swimming pool water temperature, and the heat conduction of the goggles mirror can't balance the temperature difference between the two sides instantly. Therefore, the water vapor encapsulated in the goggles will condense inside the goggles, producing tiny water droplets, which will lead to blurred vision. If you are driving, you can turn on the air conditioner and use it to remove the water droplets attached to the glass. But we can't install air conditioning on goggles either. So the designer of goggles came up with an idea. When goggles are produced, a layer of hydrophilic polymer material is coated on the inside of the goggles. This layer of material will not make the water vapor in the goggles disappear, but will change the water vapor absorbed inside the goggles into a fine water film, thus ensuring the clarity of the main areas on the goggles.

However, this kind of antifogging film made of hydrophilic polymer materials also has its own shortcomings. First of all, this kind of anti-fog film is not only afraid of scratching sharp objects, but also causes defects of anti-fog film because of oil on the skin. In addition, the loss of anti-fog film by air and water is inevitable. For frequent swimmers, the anti-fog effect of a pair of goggles will gradually fade after half a year if no anti-fog agent is used. For enthusiasts or athletes who use it frequently, the anti-fog effect will drop a lot after three or four months. It is normal that the goggles we use will fog after a certain number of times. What if the goggles are foggy? How can I keep the goggles from fogging? Whales tell you how goggles can prevent fog.

First of all, we can use antifogging agent. Rinse the goggles with clean water after each swimming. When the water is dry, we can coat it with antifogging agent. The next time you use it, put the goggles in the water before launching, which may give better play to the effect of the antifogging agent. Antifogging agent can't be applied every time you start swimming, because it contains chemicals, which will do some harm to your eyes. We can also use shower gel and detergent before swimming, mainly to prevent eye damage. A common method used by athletes is to lick with the tongue, that is, lick immediately after use. If there is fog during use, you can stop and lick it again, which may not look good.

If a proper amount of antifogging agent is applied before swimming, it can not only effectively prolong the service life of the antifogging film of swimming goggles, but also greatly enhance the antifogging effect of swimming goggles. But in order to improve the anti-fog effect, swimming experts suggest that swimmers can try this. 1. Soak the mirror before using the goggles, because the anti-fog film of the goggles is made of hydrophilic materials, and only when it comes into contact with water can it stimulate the anti-fog effect. 2. Apply antifogging agent evenly. 3. You can wash your face with cold water to reduce the temperature of your face. 4. According to different qualities, the effective time of antifogging agent is generally 0.5-3 hours. 5. For the sake of eye health, choose a big brand of antifogging agent.