---
product_id: 276927883
title: "ITW-RX11806D Windshield Washer Fluid Additive 500 ml"
brand: "rain-x"
price: "HK$244"
currency: HKD
in_stock: true
reviews_count: 3
category: "Rain X"
url: https://www.desertcart.hk/products/276927883-itw-rx11806d-windshield-washer-fluid-additive-500-ml
store_origin: HK
region: Hong Kong
---

# Streak-free crystal clear view 500 ml powerful concentrate Instant Rain-X hydrophobic shield ITW-RX11806D Windshield Washer Fluid Additive 500 ml

**Brand:** rain-x
**Price:** HK$244
**Availability:** ✅ In Stock

## Summary

> 💦 See the road like never before—drive with confidence, rain or shine!

## Quick Answers

- **What is this?** ITW-RX11806D Windshield Washer Fluid Additive 500 ml by rain-x
- **How much does it cost?** HK$244 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/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

- • **Easy Mix & Use:** Simply add to water or washer fluid—no complicated steps, just superior performance
- • **Streak-Free Clarity:** Leaves your windshield spotless without annoying smears or residue
- • **Alcohol-Free Formula:** Gentle on your vehicle’s glass and eco-conscious for everyday use
- • **Enhanced Driving Safety:** Improves visibility in rain and harsh weather for confident commutes
- • **Hydrophobic Power Boost:** Transforms any washer fluid into a rain-repellent shield instantly

## Overview

Rain-X ITW-RX11806D is a 500 ml windshield washer fluid additive that instantly applies Rain-X’s advanced hydrophobic technology to your windshield. This alcohol-free, streak-free formula enhances driving visibility and safety by repelling rain and grime, making every drive clearer and more comfortable. Trusted by thousands with a 4.5-star rating, it’s the essential upgrade for any vehicle maintenance routine.

## 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 | #6,803 in Automotive ( See Top 100 in Automotive ) #32 in Glass Care Products |
| Brand | Rain-X |
| Brand Name | Rain-X |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.5 out of 5 stars 8,645 Reviews |
| 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 | 0.3 Ounces |
| Item form | Spray |
| Item volume | 16.9 Fluid Ounces |
| Manufacturer | Rainx |
| Material Features | Spray |
| Material Type Free | Alcohol Free |
| Material features | Spray |
| Number of Items | 1 |
| Scent | Unscented |
| Special Features | Streak Free |
| Specific Uses For Product | Windshield |
| 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 .

## 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

---

## 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.hk/products/276927883-itw-rx11806d-windshield-washer-fluid-additive-500-ml](https://www.desertcart.hk/products/276927883-itw-rx11806d-windshield-washer-fluid-additive-500-ml)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-09*