On rainy days it is recommended to drive slowly, with extra attention. It is not for less. In addition to reduced visibility, the glass fogs up, the water pockets destabilize the vehicle, the track becomes slippery, the brakes lose some of their efficiency. What if you could reduce a good part of this risk? 
There are that when being passed on the glass it makes it super repellent to liquids, generating more visibility to the driver on rainy days. The rainwater hits and is quickly expelled from the glass even without the use of cleaners. The problem is that the duration of this product is short, between 3 to 7 days. And not everyone has time to reapply the product (especially when you need it most). And there are also highly durable liquid repellency products. And the best, they are not expensive and can reach up to 2 years of protection. That is, when you are driving and it starts a heavy rain the protection of the glass will be present working for you. An example of this type of product is Easytech's RAIN, a liquid repellent nano that does the protection function, generating great repellency to automotive glass with the benefit of lasting up to 30 thousand km or up to 2 years with a single application. Based on super stable SIO2 nanoparticles, RAIN once applied becomes very difficult to remove, despite being completely invisible to the naked eye. In addition to the high degree of repellency, the product also offers protection against UV rays, with an average reduction of 2º in the vehicle's internal temperature.
Is it easy to apply? It is very easy to apply. The product contains an applicator that makes the application friendly and practical. And the best: a 20ml bottle is enough for 6 applications on the windshield and costs R$ 42.90.
It is an item that should be mandatory on vehicles on rainy days. Completely changes visibility. In addition to all this, applying protection to glass is an action that pays for itself. I will explain why. A pair of new wiper blades costs an average of R$ 60.00. The average wear of a reed is approximately 1 year. When applying protection to the glasses, the reeds work less (since the glass itself expels water), changing the average durability of the reeds to 3 years.
To know the product and the application step by step, click on here. What do you prefer? Permanent protection or several constant applications? Regardless of preference, it is always best to drive safely!