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Rain-X

Rain-X® Windshield Washer Fluid Additive

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Windshield Fluid

Rain-X® Windshield Washer Fluid Additive

11806D Rain-X Washer Fluid Additive 16.9oz
11314 Rain-X Washer Fluid Additive 10oz

Applies Rain-X® Technology

Simply add Rain‑X® Washer Fluid Additive to water or any windshield washer fluid to apply Rain‑X® technology.

FEATURES & BENEFITS

Applies

Instantly applies Rain‑X® technology to the windshield

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Visibility

Enhances driving visibility, safety and comfort

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Cleans

Improves windshield cleaning

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What People Are Saying

Overall rating based on 50reviews

Blows the rain away

May 25, 2025

Great deal works perfectly in rainy days

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Size: 16.9 oz
- Josquiel cruz

Works great

May 24, 2025

Been using this stuff since 1990, helps water bead off windshield, and makes your wiper last longer

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Size: 16.9 oz
- jack

Don’t expect quality like the spray bottle kind

May 23, 2025

Product works to some minor extent… I recommend doubling the amount stated in instructions if you want water to bead. Will leave a residue on your windshield any place your wipers do not touch. 3 star for ease of use and lack of result as stated in description. Would recommend getting the spray bottle and hand cleaning windshield then applying rain x original from the spray bottle instead of this

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Size: 16.9 oz
- Tilburg1

Works

May 20, 2025

Does what its supposed to. Makes your windshield do the stars wars intro thing, fun to watch

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Size: 16.9 oz
- Glenn

Excellent water beading and good value

May 12, 2025

First time getting this vs. the usual premixed ran-x product and it was a success. At least here in the SC spring/summer. Water beaded better than any premix I have had in my truck and it was able to clear off moderate road grime and bugs. It was on sale when I bought it so was a solid value proposition also (makes 4 gallons I believe).

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Size: 16.9 oz
- HSG83

Really good for cleaning windshield

May 09, 2025

This is a great product for cleaning car windshields

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Size: 16.9 oz
- Twotons

Excellent product but could use a little better instructions for the ratio

May 09, 2025

Does the job but it is hard to mix with the right ratio in the right ambient temperature. If it is freezing cold out, then you might want to mix less water, vice versa. You don't want your washer reservoir to freeze and crack the plastic hosing.

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Size: 16.9 oz
- ESW

Water repellent

May 07, 2025

Work's wonder. The rain beads up and rolls off

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Size: 16.9 oz
- anonymous

As advertised

May 07, 2025

Came packaged in a box, came as shown! Have not used it as yet to see it’s strength in what it advertises with repelling rain

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Size: 16.9 oz
- Deevi Davis

entertainment

May 05, 2025

Pour it in and done. Use it directly on the windshield for quicker results. Love watching the rain flow off the glass.

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Size: 16.9 oz
- dave

great solution

May 05, 2025

need to replenish your windshield wiper fluid but don't want to carry around a big pre-mixed container then this is the answer. just make sure you have a 1 L water bottle in your car so you can fill up the reservoir with water.

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Size: 16.9 oz
- Alexander

Good stuff

May 01, 2025

Works well

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Size: 16.9 oz
- LGR

Works great

April 29, 2025

I wasn't sure how well this was going to work at first. I am very happy with the results. Water just rolls off of the windshield.

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Size: 16.9 oz
- Amazon Customer

Wiper fluid works great

April 24, 2025

Works great. I’ve been using this product for a couple of years now

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Size: 16.9 oz
- emily kuritz

Long Time Rainx User , First Time Concentrate User .

April 18, 2025

I usually but this stuff by the gallon, literally , but wanted to try out the concentrate to see if it works better . I paid $6.25 for the concentrate here and 4.50 for a gallon of the blue washer fluid . That's about $6 per gallon when it's all said and done . A gallon of the pre mix where I buy it is $7 regular price .That being said economically which ever one works better will be a wash and pre mixed will be slightly easier to use .Without knowing the long term difference I'm giving it 5 stars for the measuring slots on the bottle , small and easy to use tip and ergonomics of the bottle itself . Between the 3 it's easy to get the correct amount into the reservoir without spilling any.The pre mix doesn't streak my windshield at all but works great for about a month then I just do a quick wash squirt and it's protected again .The concentrate should work the same way .I'll edit this review if it doesn't .I'm using this stuff on a 25 Kona work solar glass.

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Size: 16.9 oz
- Stephen Elmore

Mixed reults

April 17, 2025

I had to use a lot more then what the directions said to get the desired results.

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Size: 16.9 oz
- G Bath

Recommend for every car.

April 15, 2025

Easy to use, has measurement on the side, works as expected keeping the windshield cleaner longer.

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Size: 16.9 oz
- Alex A.

Great stuff

April 07, 2025

The best. Way easier then hand applying Rain-X to your windshield and works almost as well. I used to be able to find this item at any Walmart and other stores also, but in recent time stores are no longer carrying it. I hope Amazon keeps it in stock because it's the only place I can seem to find it these days!

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Size: 16.9 oz
- Mike B.

Great product!

March 29, 2025

Better than buying it gallon jugs. This works just like the premixed. Only draw back is, if you live in a colder climate, you'll have to add the dicing chemical in it.

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Size: 16.9 oz
- Bradford Y.

convenient

March 27, 2025

does the job and convenient mixing

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Size: 16.9 oz
- TN

Premix worked better

March 27, 2025

Premixed works better for me. I mixed this with distilled water to ensure no residue, but the coating of premixed solution is not there. Price and mixing of filtered or distilled water to dilute does add much to the cost of using concentrate but when washer fluid in your car runs out, ease of use and cleaning power of premix seems better.

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Size: 16.9 oz
- JUST ONE PERSON

Works ok.

March 24, 2025

Left a strange film on my windshield.

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Size: 16.9 oz
- Sydney M

Buena compra

March 18, 2025

Buen producto

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Size: 16.9 oz
- Miguel Verenzuela Placencia

Good stuff

March 15, 2025

Good stuff

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Size: 16.9 oz
- Foodnoitall

Great Product.

March 06, 2025

Worked as it should.

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Size: 16.9 oz
- Doesn't Work I bought btwo of them, one for me and one for my daughter in 6 and 7 month they stop working. Impossible to fix it

Economical alternative for Rain-X

March 05, 2025

Great performing, space saving product. One small bottle goes a long way.

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Size: 16.9 oz
- Amazon Customer

Excellent

March 02, 2025

Great product. I use it when I'm cooking eggs. I never have a problem with cleanup. Lost 1 star because I'm now partially blind and I'm followed by a mouse that keeps telling me about 1 star mayonnaise I should buy my family for Christmas.

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Size: 16.9 oz
- Syd mouse

Highly recommended

February 16, 2025

I love this product and cannot recommend it enough. It puts a wax on the windows. Which means you don't have to run your windshield wipers on as much. Makes it much easier to see while driving

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Size: 16.9 oz
- ParklandBob

good price

February 15, 2025

ok

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Size: 16.9 oz
- Kevin Oehlers

A Must have !!

January 25, 2025

A great product !! Not really sure how many people are aware of this product and how well/ easy of its use. I've been using and reordering for years now. I usually mix approximately one third of the bottle to 3/4s bottle of windshield washer fluid. You CAN apply to your windshield even in the rain and it will be effective. Obviously if you apply just prior, you wont have to use as much. I make sure to fill my wife and daughters reservoirs for they're safety. Very impressed with this product and will continue to purchase it in the future.

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Size: 16.9 oz
- Robert Olczak

Highly recommend

January 24, 2025

Works good!

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Size: 16.9 oz
- HowardH

A game changer for the windshield---very convenient to use

December 17, 2024

Add this product to your wiper fluid (I just pour the fluid in and then add some of this) and it really works well to bead up the rain, which nearly a daily occurrence in Seattle from October to May. This helps to increase the visibility on the windshield when it rains. (Good wipers help, too!)

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Size: 16.9 oz
- Renee Holt

Rain-X washer fluid additive

December 15, 2024

As always you can never go wrong with Rain-X products. I ordered one of these here because all the stores locally where out. The cost was a lot more here but I guess they get you on supply and demand. American Capitalism at its best...lol. I am rating the, Rain-X additive only at 5 stars because this stuff has worked great for me for many years. Sometimes I do not even have to turn on my wiper blades as the water beads and rolls off of my windows.

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Size: 16.9 oz
- Love to hunt

Easy and effective alternative

November 29, 2024

Not as good as the one applied directly to the windshield, but a great alternative with no effort.

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Size: 16.9 oz
- M

Works good

November 23, 2024

Works well when added to the washer fluid.

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Size: 16.9 oz
- Thomas

Great deal

November 23, 2024

I have been using this stuff for many years and still works for me.

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Size: 16.9 oz
- Carlos

Windshield Helper

November 18, 2024

I like this stuff because it adds a constant low level of Rain-X instead of the heavier one-time treatments. It helps keep the windshield water sheeting off and seems to make it easier to wash it.

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Size: 16.9 oz
- TJ Verb

easy tonise

November 15, 2024

i love this project!! i’ve tried all the rain x things and this one was the easiest

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Size: 16.9 oz
- elizabeth jane donnellan

Works well

November 13, 2024

This additive works really well. The rain just glides off my windshield now.

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Size: 16.9 oz
- Tammy DeeDee

Word good

November 11, 2024

Great product

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Size: 16.9 oz
- Fred otto

Doesn't bead the rain

November 09, 2024

I've always liked Rain-X products but I'm disappointed in this one because I put it in both mine and my wife's car's windshield washer fluid reservoir and it doesn't bead the rain. I just recently ordered some of the original Rain-X and I'll apply it myself.

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Size: 16.9 oz
- James Timpson Jr.

as ALways Good

November 06, 2024

work as always good

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Size: 16.9 oz
- Shani

Good product

November 04, 2024

It's very easy to use. The bottle is semitransparent and has a measuring gauge on the side so you can get an idea of how much you're putting in. That was a great help instead of just squeezing a bit out of the top and guessing if you got it right. Hasn't rained here in a while so I haven't gotten to test it, but it beaded up nicely on my rain-x treated windshield.

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Size: 16.9 oz
- Jeremy

works as advertised

October 31, 2024

Keeps windshield clean

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Size: 16.9 oz
- Pops

Works great! Don’t add too much!

October 31, 2024

If you follow the instructions, and do not add too much the product works great. If you add too much, it will streak the windshield.

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Size: 16.9 oz
- Mark Bearden

Works Okay

October 29, 2024

Does help and we will see how long it lasts. Price could be just a little better.

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Size: 16.9 oz
- Gunner

Works

October 26, 2024

I like it

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Size: 16.9 oz
- Trey

Product works great!

October 24, 2024

I tried this additive in hopes it might improve the effectiveness of my wipers at keeping my windshield clear. This product works IF USED IN THE CORRECT QUANTITY. This product is concentrated and must be diluted to 4 ounces per gallon of windshield washer fluid. (I happen to know that my truck can hold roughly half a gallon, so I just eye balled about 1/8 of the bottle.). I found that this product does initially cause a haze where it has been applied, but after about 5 seconds it's completely invisible, with no residue. I tried with a hose and it made a significant difference in how water rolls off of my windshield. (this product is designed to cause the water to bead up making the wipers and wind more effective at removing the water. It's worth noting that I used this product with RainX windshield fluid (the orange one) so I am not sure if their is any chemical interactions that may occur with other washer fluids.

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Size: 16.9 oz
- GLaDOS

Keeps windshield clean

October 23, 2024

I love this product. Way easier than doing it with a rag and waiting with their other products. Add to washer dispenser in car and it does the work for you. Water just beads and moves off the windshield. Great product.

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Size: 16.9 oz
- Stacy Powers

Does the job

October 23, 2024

Great results

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Size: 16.9 oz
- Jewell Buchanan