Designed to prevent fogging on a dive!
Directions for Mask/Swim Goggles:
Spray small amount on wet or dry lenses, rub gently over entire area, and rinse. Avoid touching the inside of the lens during and after rinsing.
Also prevents fogging when used on sunglasses, eyewear, face shields, ski goggles, masks, mirrors, paintball goggles, binoculars, etc. Spray onto all lens surfaces. Gently dry with a soft cloth.