This $7 spray will keep your glasses from fogging up even when you wear a mask

We tested a $7 eyeglass spray that stops your glasses from fogging up, even when you wear a mask.
According to a popular TikTok, Zeiss' Fog Defender Spray is the best product for stopping foggy glasses. Insider producer Irene Kim tried the spray out on her eyeglasses to see if it made a difference while wearing a mask, as well as after showering.