Cleaning windows isn't the most enjoyable chore, so finding effective solutions is key.
After construction left my windows coated in dust and sand, I wanted a way to clean my windows without streaks but didn't feel like shopping.
Fortunately, I had Castille soap on hand, and I whipped up the best homemade window cleaner I've ever used. Plus, it's eco-friendly!
Best Homemade Window Cleaner Recipe
There are many window cleaner recipes around, including those that utilize baking soda for cleaning, but I sought something quick that worked for both inside and outside without using vinegar to avoid unpleasant odors and keep my home smelling fresh.

I turned to Castille soap, a gentle yet effective cleaner, suitable for making homemade kitchen cleaners or natural stain removers.
Inspired by Lisa Bronner, a green cleaning expert, I mixed one tablespoon of Castille soap with one liter of distilled water in a clean spray bottle. A gentle shake combined the two.
I opted for almond-scented soap for a festive aroma, making my home feel like Christmas. You can choose any scent you like. This method is great for those who prefer not to measure out essential oils that could streak the glass if overused, making it a fantastic cleaning tip for those of us who aren't precision fans!
Dr. Bronner Almond Pure-Castile Soap | Purchase on Amazon
This soap has a delightful Marzipan scent and is ideal as an all-purpose cleaner, bringing a bakery-like fragrance to my home.
Next, the process was straightforward. I sprayed two pumps onto the window, wiped it down with a damp cloth, and used a window vac, like this one from Amazon, to eliminate suds and water for a streak-free finish. A simple squeegee works too.
Karcher WV 1 Plus Window Vacuum Squeegee |Purchase on Amazon
This window vacuum/squeegee is excellent for clearing condensation and cleaning windows, ensuring a streak-free result.
What's great about this window cleaner is its versatility; I could use it on window tracks, frames, and sills inside and out. Other commercial cleaners risk damage, which would require switching products for different surfaces. This method simplified the entire cleaning process, perfect for cleaning without stress.

Lisa Bronner is the granddaughter of Dr. Emanuel Bronner, founder of Dr. Bronner's Soaps. She's a consumer advocate and speaker promoting health and green lifestyles. Lisa also authored a green-cleaning guide in her book Soap & Soul, available on Amazon, which features this window-cleaning recipe.
Common Questions
What happens if you mix Castile soap with vinegar?
While it seems like mixing Castile soap and vinegar could create a superior eco-friendly cleaner, these two ingredients curdle due to the soap's alkaline nature and the vinegar's acidity. Keep them separate to avoid a sticky residue on your surfaces.
How does Castile soap differ from dish soap?
The primary distinction between Castile soap and dish soap lies in their pH levels. Castile soap typically has a higher pH, around 8.9, similar to baking soda, but is milder than chemical cleaners like bleach. This gentle alkalinity makes it effective for various cleaning tasks, from household chores to handwashing.
Achieving crystal-clear glass involves more than just using the right cleaning solution. Several window cleaning mistakes, like applying too much product, cleaning in bright sunlight, or using excessive pressure, can spoil the final appearance of your windows.