

🚗 Clear roads, safer rides — see the difference with every wash!
Rain-X 831991L Windscreen Washer Additive is a 1-litre high-performance formula designed to deliver streak-free, crystal-clear windscreen cleaning all year round. It effectively dissolves tough contaminants like insect residue, tree sap, bird droppings, and road grime while applying a hydrophobic rain-repellent coating that enhances water beading and runoff. Compatible with all windscreen washer systems, this additive improves visibility, reduces wiper reliance, and keeps your windscreen cleaner for longer, ensuring safer and more comfortable driving in all weather conditions.
| ASIN | B088KL1T4V |
| Best Sellers Rank | 564 in Automotive ( See Top 100 in Automotive ) 14 in Antifreeze & Coolants 17 in Screenwash |
| Brand | Rain-X |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,149) |
| Date First Available | 13 May 2020 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Item Weight | 1.01 kg |
| Item model number | 831991L |
| Manufacturer | Rain-X |
| Manufacturer part number | 831991L |
| Model | Rain-X Screenwash Additive |
| Product Dimensions | 8.5 x 8.5 x 23 cm; 1.01 kg |
| Special Features | Streak Free |
I**K
Effective additive for car washer bottles
If you get smearing on your windscreen then this is the ideal product! You simply add a small amount to the cars washer bottle and the solution results in a very clear windscreen with water simply beading off the screen, much improving the visibility. The solution is also effective at removing bug residue and seems to stick to the screen that it is effective for quite a while. For the amount you get and the ease in which it removes road-film, this is a value for money product. Highly recommended.
T**T
Great stuff
Why did you choose this product over others?: Living in the moist mildewy climes of scotland ,where summer is probably 2 weeks in may and thats it, windscreen wipers are fairly important. I used the karate kid wipe on wipe off rain x and found it to be superb . On side windows it would last for months . On the windscreen ....not so much . Impressive but after a bit of wiper action ,meh. While blethering with some web toed comrades i was extolling the virtues of said rain x to a motor cycle helmet wearer , it came up about the rain x screen wash . Now i didnt know this stuff existed and last screen wash i had stank of bubblegum and has put me off bubblelisous for life. After a trip into the amazon and delivered nxt day (sooooperb) ,i was taken back a bit about size of bottle ,it was a bit small compared with the foul smelling radioactive gallon i was used to. So having thouroghly scanned and not read the instructions ,sniffed the bottle (ok) i put a scotsmans amount in ,mabey about a quarter mabey... it works well . Cleaned the grime ,streak free ,didnt smell and had the water beading of the hard work stuff . Been a few weeks and im still impressed by it . We will see if the more winter times need a more potent mix ,i will have no probs getting this again .
S**N
This is not 5 star review giving it that so you will read this criticism! Appalling product
I dont know who is writing these 5 star reviews or why this is an Amazon choice but it is an appalling product. Not only will it leave terrible smears but they are incredibly hard to remove. Night glare caused by this is dangerous. It actually eats away at the rubber on the wipers so you get rubber marks as well. If you dont trust my review, read the low star review from others and check their pictures. With this product you cant see out your windshield and you will need to replace your wipers. Horrible stuff.
A**.
hope it works well
i have been using the 200ml bottles of rainex for a few years now and its great for expelling water and giving better visability when raining. i am hoping this additive will make that initial treatment last longer than the 2-3 months i usually get. i decided to try the additive instead of the mixed wash because you can use 5lrs of screen wash pretty quick in winter removing salt from the screen or bugs in the summer, i am hoping that since this is made by rainex, they have solved the issue of normal screen wash just beading up and getting repelled from the screen and thus having the inability to remove bugs in summer. removing salt has never been an issue when using rainex since salt absorbs water. would recommend rainex repellent treatment anytime. will update after real testing
P**N
Rain repellant screen wash
Great job. Easy way to use. Works for me.
A**R
Clean view
Since I tried this product, can't use any other. This is the best screen wash
R**X
Good quality and value.
Good stuff. Helps to keep windscreen clear of rain and to prevent wipers from leaving marks. Will continue to use this regularly.
"**"
Game changer
I have always used Rain X, however, it is tiresome having to reapply. This rainex for your screen wash works really well and has a nice smell. Good value for money as an addition to your screenwash.
Trustpilot
1 week ago
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