Sweat, dust, sand and salt leave residue that, if rubbed dry, scratches the lenses and damages their coatings. A few simple habits help them last longer.
How to clean them
Rinse with lukewarm water to remove dust and sand before touching the lens.
If needed, add a drop of mild soap and wash with clean fingers.
Rinse again and shake off the excess water.
Dry by dabbing with a clean microfibre cloth, without rubbing.
Clean the frame and nose pads too, where sweat builds up.
What to avoid
Paper towels, tissues and T-shirts: rough fabrics can scratch.
Alcohol, ammonia, solvents and harsh cleaners.
Very hot water.
Dry-wiping lenses covered in sand or dust.
Contact with sunscreen and insect repellent, which can damage lenses and frames.
How to store them
In their case, without resting the lenses on hard surfaces.
Away from heat sources: dashboard, car boot or top box in the sun.
Clean and dry.
After sea or pool use, rinse with fresh water.
If your model comes with specific instructions, for example for the anti-fog treatment, follow them.