How to avoid fogging your glasses with the mask

This is the fixed price of surgical masks and gels

Types of masks

Since the coronavirus crisis began, there have been conflicting recommendations from health authorities regarding the use of masks. Finally, it seems that there is already consensus and, although they are not mandatory, their use seems vital to slow the spread of COVID-19 and its use is recommended whenever you go out on the street.

For people who use glasses, whether in sight or in the sun, the use of masks is uncomfortable, since, when breathing, the crystals of these are easily fogged. The explanation is very simple: the mask forces the hot and humid air of our breath to be sent through the only outlet it can find, the upper opening. Thus, the air from our breath, which comes out at 36º more or less, collides with the cold surface of our lenses and condenses leaving a mist layer like the one that forms on our windows in winter when it’s cold outside.

woman walk mask

The soap trick

However, in the social networks, videos of various specialists explaining a simple trick to prevent this from happening.

In one of these videos, Alejandro León, the traumatologist at the Valladolid Plenum Clinic, recommends rub the glass with a bar of dry soap and then clean it with a chamois. So this really effective tip consists of three very simple steps:

  1. We take a bar of dry soap.
  2. We rub the lenses.
  3. We pass a chamois to clean the glasses, so that it diffuses the soap forming a transparent layer and without stains or solid parts. It is important to clean it well so that it does not obstruct your vision later.

The plaster trick

But, in addition, as fogging occurs because the air in our lungs rises up the face and ends up condensing in the glasses, another solution is prevent air from reaching them. This can be done by bending the top of the mask a little, putting some tape over the mask and the nose to seal it, or both. This method has also become popular through the Twitter account @weremedicine.

On the market there is another alternative to prevent the glasses from fogging up: anti-fog wipes, which prevent scratches and the loss of the anti-reflective treatment of the most common lenses. And if you’ve ever dived, you may have thought about resorting to the trick that divers use to keep their goggles from fogging up: apply a layer of saliva. The guide produced by the American newspaper The New York Times to solve the fogging of the glasses it is not recommended. It is effective, but trying to prevent the spread of a virus by spreading your saliva is not a good idea.