Rain-X Anti Fog 500ml Spray

So it definitely works but, make sure you clean the glass/windows first and let it dry before you apply this.I tried it on one side of the car (driver and rear passenger window) and half the windscreen. Went on a trip with the whole family on a cold wintry day and noticed a massive difference between previous trips. The wife was confused why oneside was fogged up. 😁Cleaned the glass properly this time and reapplied. Working extremely well. Using alongside dehumidifier bags and air vents to minimise fog and stay comfy.

Rain-x is great stuff, always use the water repellant on the outside of the windscreen and it reduces wiper judder and improves visibility. This reduces the internal condensation in winter and on rainy days.

This really didn’t work and I cannot rate it at all because it claims to do this and that and it doesn’t at all. Not fit for purpose and can’t recommend.

Didn't find that this does very much. I did read the reviews before I bought it and hoped that it would at least improve my problem a little.

Great

Easy to use. Just spray onto your windscreen and then wipe with some kitchen roll. Rain water / Spray just bead and run off.

Having cleaned the windows the most since having a full valet, when applying the anti damp the glass becomes very shiny/distracting (and awful at night as it reflects the light) and requires a lot of buffing to remove. By which point, it still works, it just works a lot less. I've only used it for two applications and then thought life is too short. I'd rather wait a few mins for the AC to clear the glass instead.This has been relegated for use on bathroom mirrors (for which it works perfectly).

Same quality as more expensive brands