---
product_id: 276927883
title: "ITW-RX11806D Windshield Washer Fluid Additive 500 ml"
brand: "rain-x"
price: "£10.21"
currency: GBP
in_stock: true
category: "Rain X"
url: https://www.desertcart.co.uk/products/276927883-itw-rx11806d-windshield-washer-fluid-additive-500-ml
store_origin: GB
region: United Kingdom
---

# Instant Rain-X technology activation 500 ml concentrated formula Streak-free, alcohol-free protection ITW-RX11806D Windshield Washer Fluid Additive 500 ml

**Brand:** rain-x
**Price:** £10.21
**Availability:** ✅ In Stock

## Summary

> 🌧️ See the road like never before with Rain-X clarity!

## Quick Answers

- **What is this?** ITW-RX11806D Windshield Washer Fluid Additive 500 ml by rain-x
- **How much does it cost?** £10.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/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

- • **Trusted by Thousands:** Top-rated with 4.5 stars from over 8,700 users
- • **Streak-Free Guarantee:** Alcohol-free formula ensures a spotless, clear windshield
- • **Effortless Application:** Simply add to any windshield washer fluid or water
- • **Drive Safer, See Better:** Enhances visibility in rain and harsh weather conditions
- • **Crystal Clear Vision, Always:** Instantly applies Rain-X technology for superior water repellency

## Overview

Rain-X ITW-RX11806D is a 500 ml windshield washer fluid additive that instantly applies advanced Rain-X water-repellent technology. Designed to enhance driving visibility and safety, this alcohol-free, streak-free formula easily mixes with any washer fluid or water, delivering crystal-clear windshields in all weather. Trusted by thousands and made in the USA, it’s a must-have for every driver aiming for superior glass care.

## 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

## 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 | #907 in Automotive ( See Top 100 in Automotive ) #6 in Glass Care Products |
| Brand Name | Rain-X |
| Contains Liquid Contents? | Yes |
| Country of Origin | USA |
| Customer Reviews | 4.5 4.5 out of 5 stars (8,825) |
| Global Trade Identification Number | 00079118118013 |
| Included Components | 1 bottle |
| Item Form | Spray |
| Item Type Name | Washer Fluid |
| Item Volume | 16.9 Fluid Ounces |
| Item Weight | 567 Grams |
| Manufacturer | Rainx |
| Material Features | Spray |
| Material Type Free | Alcohol Free |
| Model Number | RX11806D |
| Number of Items | 1 |
| Part Number | RX11806D |
| Product Benefits | Streak Free |
| Recommended Uses For Product | Fleet and plant maintenance. |
| Scent | Unscented |
| Size | 500 ml |
| Special Features | Streak Free |
| Specific Uses For Product | Windshield |
| Surface Recommendation | Glass |
| UPC | 079118118013 |
| Unit Count | 500 Milliliters |

## 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 .

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.uk/products/276927883-itw-rx11806d-windshield-washer-fluid-additive-500-ml](https://www.desertcart.co.uk/products/276927883-itw-rx11806d-windshield-washer-fluid-additive-500-ml)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-24*