--- product_id: 727714375 title: "Rain-X Windshield Washer Fluid Additive 500ml" brand: "rain-x" price: "€ 46.93" currency: EUR in_stock: true category: "Rain X" url: https://www.desertcart.be/products/727714375-rain-x-windshield-washer-fluid-additive-500ml store_origin: BE region: Belgium --- # Water-repellent formula 500ml treats up to 16L fluid Compatible with any washer fluid Rain-X Windshield Washer Fluid Additive 500ml **Brand:** rain-x **Price:** € 46.93 **Availability:** ✅ In Stock ## Summary > 💦 Drive clear, drive confident — repel water like a pro! ## Quick Answers - **What is this?** Rain-X Windshield Washer Fluid Additive 500ml by rain-x - **How much does it cost?** € 46.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/727714375-rain-x-windshield-washer-fluid-additive-500ml) ## 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:** Join over 8,700 satisfied users who rate it 4.5 stars for consistent performance. - • **Enhanced cleaning power:** Boosts your washer fluid’s ability to remove grime and road film effortlessly. - • **Universal compatibility:** Seamlessly blends with any washer fluid or even plain water for year-round use. - • **Maximized value, minimal effort:** One 500ml bottle enhances up to 16 liters of washer fluid—efficiency meets convenience. - • **Crystal-clear vision, rain or shine:** Transforms your windshield into a water-repellent shield for safer, streak-free drives. ## Overview Rain-X Windshield Washer Fluid Additive is a 500ml liquid concentrate designed to be mixed with any windshield washer fluid or clean water. It creates a water-repellent coating on your windshield, improving visibility and safety by causing water to bead and roll off. This additive also enhances the cleaning power of your washer fluid, making it easier to remove dirt and grime. One bottle treats up to 16 liters of fluid, making it a cost-effective upgrade for year-round windshield care. ## Description desertcart.co.jp: Rain-X Windshield Washer Fluid Additive 500ml : Automotive ## Features - Washer Tank Additive Type Water Repellent - Simply mix it into a washer tank to complete a water repellent washer fluid - Washed and wiped for water repellency - Works with any type of washer fluid - Can also be added to clean water during the summer - This single bottle can be used with 16L of washer fluid (clean water) - Improved cleaning effect of washer fluid ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000BPTVTK | | ASIN | B000BPTVTK | | Amazon Bestseller | #16,081 in Automotive ( See Top 100 in Automotive ) #24 in Automotive Window Washing Installation Cleaners | | Brand Name | Rain-X | | Contains Liquid Contents? | Yes | | Customer Reviews | 4.5 4.5 out of 5 stars (8,822) | | Global Trade Identification Number | 00079118118013 | | Is Discontinued By Manufacturer | No | | Item Form | Liquid | | Item Volume | 16.9 Fluid Ounces | | Item Weight | 567 Grams | | Item model number | RX11806D | | Manufacturer | Rain-X | | Manufacturer | Rain-X | | Material Type Free | Liquid | | Model Number | RX11806D | | Number of Items | 1 | | Part Number | RX11806D | | Product Dimensions | 18 x 17.8 x 24.1 cm; 567 g | | Size | 500 ml | | Special Features | Water repellent, improves cleaning effect | | Specific Uses For Product | Windshield | | Surface Recommendation | Windshield | | UPC | 079118118013 | | Unit Count | 500.0 Milliliters | ## Product Details - **Brand:** Rain-X - **Item Form:** Liquid - **Item Volume:** 16.9 Fluid Ounces - **Item Weight:** 567 Grams - **Material Type Free:** Liquid - **Number of Items:** 1 - **Special Feature:** Water repellent, improves cleaning effect - **Specific Uses For Product:** Windshield - **Surface Recommendation:** Windshield - **Unit Count:** 500.0 Milliliters ## Images ![Rain-X Windshield Washer Fluid Additive 500ml - Image 1](https://m.media-amazon.com/images/I/61ALp+LhS7L.jpg) ![Rain-X Windshield Washer Fluid Additive 500ml - Image 2](https://m.media-amazon.com/images/I/71OAfnI60ZL.jpg) ![Rain-X Windshield Washer Fluid Additive 500ml - Image 3](https://m.media-amazon.com/images/I/71V8K9Wp+bL.jpg) ![Rain-X Windshield Washer Fluid Additive 500ml - Image 4](https://m.media-amazon.com/images/I/71jpAwef2yL.jpg) ![Rain-X Windshield Washer Fluid Additive 500ml - Image 5](https://m.media-amazon.com/images/I/71TzOyjeARL.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.be/products/727714375-rain-x-windshield-washer-fluid-additive-500ml](https://www.desertcart.be/products/727714375-rain-x-windshield-washer-fluid-additive-500ml) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-05-21*