---
product_id: 276927883
title: "ITW-RX11806D Windshield Washer Fluid Additive 500 ml"
brand: "rain-x"
price: "€ 31.37"
currency: EUR
in_stock: true
reviews_count: 8
category: "Rain X"
url: https://www.desertcart.de/products/276927883-itw-rx11806d-windshield-washer-fluid-additive-500-ml
store_origin: DE
region: Germany
---

# Instant Rain-X technology activation 500 ml precision dosing Streak-free, enhanced visibility ITW-RX11806D Windshield Washer Fluid Additive 500 ml

**Brand:** rain-x
**Price:** € 31.37
**Availability:** ✅ In Stock

## Summary

> 💦 See the road like never before—Rain-X clarity in every drop!

## Quick Answers

- **What is this?** ITW-RX11806D Windshield Washer Fluid Additive 500 ml by rain-x
- **How much does it cost?** € 31.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/276927883-itw-rx11806d-windshield-washer-fluid-additive-500-ml)

## Best For

- rain-x enthusiasts

## Why This Product

- Trusted rain-x brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Efficient:** 500 ml bottle designed for long-lasting use without bulk or waste.
- • **Trusted by Thousands:** 4.5-star rating from over 8,600 users proves consistent performance and reliability.
- • **Effortless Application:** Simply add to your existing washer fluid—no extra steps, no hassle.
- • **Drive Safer, See Further:** Instantly repels rain, sleet, and snow to boost driving confidence in all weather.
- • **Crystal Clear Vision, Always:** Transforms any washer fluid with Rain-X hydrophobic tech for superior water beading.

## Overview

Rain-X ITW-RX11806D is a 500 ml windshield washer fluid additive that instantly applies Rain-X’s advanced water-repellent technology to your windshield. Designed for easy mixing with any washer fluid, it delivers streak-free, enhanced visibility and improved driving safety in wet conditions. Highly rated and trusted, this additive transforms your windshield care routine with minimal effort.

## Description

- simply add rain‑x washer fluid additive to water or any windshield washer fluid to apply rain‑x technology. - instantly applies rain‑x technology to the windshield - enhances driving visibility, safety and comfort

Review: Excellent - Recommend
Review: Recommended - Great product using for last three years.

## Features

- Rain‑x windshield washer fluid additive applies rain‑x technology
- Product features
- Size: 500 ml
- Brand: Rainx
- Instantly applies rain‑x technology to the windshield

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BPTVTK |
| Best Sellers Rank | #7,169 in Automotive ( See Top 100 in Automotive ) #30 in Glass Care Products |
| Brand | Rain-X |
| Customer Reviews | 4.5 4.5 out of 5 stars (8,621) |
| Date First Available | 7 August 2012 |
| Exterior | Machined |
| Item Weight | 8.49 g |
| Item model number | RX11806D |
| Manufacturer | Rainx |
| Manufacturer Part Number | RX11806D |
| Model | Washer Fluid |
| Product Dimensions | 18 x 17.8 x 24.1 cm; 8.5 g |
| Special Features | Streak Free |

## Product Details

- **Brand:** Rain-X
- **Item form:** Spray
- **Material features:** Spray
- **Scent:** Unscented
- **Specific uses for product:** Windshield

## Images

![ITW-RX11806D Windshield Washer Fluid Additive 500 ml - Image 1](https://m.media-amazon.com/images/I/51cNcELxXJL.jpg)

## Questions & Answers

**Q: I love the how well the standalone gallon rain-x jugs work.will adding this to non-rain-x fluid make it work just as well as standalone? or not quite?**
A: be cautious i had a washer fluid i added this to and 24 hours later the near as i could tell the rainx reacted with the blue dye in the washer fluid and i had clear washer fluid with a layer of blue sticky slime floating on top of it  i have only had it happen once but might mix this in a jug with you preferred brand of washer fluid and let it set for a day before you add it to your vehicle reservoir to make sure it wont react the same way

**Q: Does this product work well with de-icer washer fluid? Or should I stick to the original glass treatment?**
A: It will work with anything, if you want deicing, you must use it with a deicing washer fluid as a base, or just put 1/2 a bottle of rubbing alcohol in a gallon of water then add 4 oz RainX... the RainX on it's own does a great job as a cleaning fluid, but will freeze without some kind of additive

**Q: Everywhere I look it says don’t add just water to the tank can you or can you not just mix with water?**
A: Yes, you can mix it with plain water - it says so right in the description. I suggest using distilled water though, because the minerals in tap water might eventually block up your lines.

**Q: Does this leave hard-to-remove stains on car? Clog windshield washer nozzles? Leave a hard-to-remove dirty film in windshield corners?**
A: Yes!  Has left bad film and water spots similar to hard water spots on the parts of the glass the wipers don't reach. Washed my windshield at the gas station and it did not come off.  I am pissed.   Probably going to return product and contact rain x for how to clean my windshield.  Also leaves a hard water like stain in a line where right side wiper stops in middle of windshield.   I do not recommend this product .

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent
*by S***Y on 30 January 2024*

Recommend

### ⭐⭐⭐⭐⭐ Recommended
*by A***G on 10 July 2021*

Great product using for last three years.

### ⭐ DO NOT MAKE THE SAME MISTAKE I DID
*by V***C on 31 March 2024*

This product leaves a horrible spray residue that is very hard to remove. I followed the recommended ratio and today it rained slightly but enough to use the wipers. Oh boy, was I in for a surprise. It took an hour of elbow grease to remove all the overspray from my car body. Car shampoo alone won’t remove it (it’s water repellant after all). The only way was hard pressure and lots of micro fiber toweling to get rid of the incredible gunk that matched the V spray pattern of the windshield washer. I hope my PPF is not permanently ruined by the chemical residue. I can see indentations from the same residue spots that I removed. Avoid this product! I would return this junk of a bottle if I could.

## Frequently Bought Together

- Rain-X RX11806D Washer Fluid Additive-16.9 fl. oz, 500. ml
- Rain-X 800002250 Glass Treatment Trigger, 16 Fl Oz - Exterior Glass Treatment to Dramatically Improve Wet Weather Driving Visibility During All Weather Conditions
- Rain-X 5071268 2-in-1 Glass Cleaner and Rain Repellant, 23 oz. (Pack of 1) - Provides a Streak-Free Clean for Automotive Glass While Preventing Sleet, Snow, Ice, and Road Spray Build Up

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-26*