Water cover and glasses: how to prevent crystals from getting foggy

Another practice comes directly from Tokyo police, according to TimeOut.com, and involves inserting a tissue under the mask. In doing so, the water vapour, guilty of tarnishing the crystals, will be absorbed before heading towards the lenses.

ANTI-FOG SPRAYS

There are products that prevent more durable than soap, that the crystals of the glasses accumulate vapour. It is very effective but also has a higher price. This solution is most recommended for people who need to wear the mask for many hours. This alternative to avoid fogging the goggles with mask is the same one that divers wear on diving masks.