One of the challenges of wearing a face mask is that the breath escaping from your mouth can fog up your glasses. This issue is exacerbated in humid weather, as the moisture in your breath quickly accumulates on the lenses, making it difficult to see clearly. Try these tips to keep your glasses fog-free:
Wash your glasses with soapy water
Soap reduces surface tension, causing water molecules to spread out evenly instead of forming droplets. Washing your glasses with soap and water can help create a barrier against fogging. Before wearing your glasses, simply wash them with soapy water, shake off the excess moisture, and allow them to air dry, or gently wipe the lenses with a clean, soft cloth.

Using soap and water helps prevent foggy glasses
Seal the top edge of your face mask
When wearing a face mask, it’s important to ensure a tight seal along the top to prevent your breath from escaping upward onto your lenses. Pinch the mask firmly along the bridge of your nose and adjust it to fit snugly. You can also use tape to secure the top edge of the mask to your face.
Choose a well-fitting face mask
A loose-fitting face mask can allow your breath to escape upward, fogging up your glasses. Make sure your mask fits properly, contouring to the shape of your face, and sealing the gap between the mask and your nose. A well-fitted mask will direct your breath downward, reducing the likelihood of fogging.

Adjusting your face mask can help reduce fogging
Adjust your glasses to sit further from your face
If your glasses have nose pads, try adjusting them so that the frames sit slightly further from your face, creating a gap for your breath to escape without fogging the lenses.
Use an anti-fog solution
There are specialized anti-fog sprays, wipes, and gels available for treating lenses. However, be cautious when using these products, as some may contain chemicals that can be harmful to your eyes over prolonged periods.
Breathe downward and outward
A technique known as “breathing downward” can help prevent your glasses from fogging. To do this, keep your upper lip slightly extended beyond your lower lip, and then blow downward as if you’re playing a flute. This directs the warm air downward instead of upward toward your lenses. Occasionally pulling down your mask to exhale can also help reduce lens fogging.
Invest in anti-fog glasses
Consider purchasing glasses with an anti-fog coating if you regularly work in an environment where wearing a face mask and glasses is necessary. These glasses are designed to resist fogging and also offer protection from UV rays, scratches, and harmful blue light emitted by electronic devices, making them a worthwhile investment.