The Fall Window Cleaning Trick That Lets in More Light on Darker Days – Experts Say It's 'Tried and True' and 'Works Beautifully'

One of the best ways to boost the light in your home – and your mood – during fall and winter is polishing your windows. It's so simple, but it can have a profound effect on the amount of light that floods your home on even the darkest days.

This chore is far from rocket science; however, our cleaning experts say there's one little-known glycerin trick that can really remove dust and dirt, and make them sparkle and shine for longer.

Here, they share their cleaning tips for lasting results.

Why Does Glycerin Work to Clean Windows?

To find out more about this clever way to clean windows and cleaning with glycerin, I spoke to Scott Schrader, cleaning expert at CottageCare.

'Glycerin is one of those tried and true tips that works beautifully for window cleaning in the fall and winter,' he says. 'It not only cleans the glass, but it creates a microscopic layer that repels dust, fingerprints, and condensation.

'That thin film keeps your windows clearer longer and allows more natural light to come into your home when the days become shorter,' helping to combat SAD, particularly when paired with decor to boost your mood.

What's more, Karina Toner, cleaning expert and operations manager at Spekless, adds that glycerin, such as the bestselling Equate Pure Vegetable Based Liquid Glycerin Oil available at Walmart, is mild and non-toxic, making it an ideal non-toxic cleaning supply if you're striving to make a home less toxic, and proving that you don't need harsh cleaning chemicals to clean well.

'It leaves a barely-there layer that resists dust and fog,' she adds. 'That means no hazy film or condensation, just a smooth, streak-free shine. The clearer your windows, the more natural light can flow in, which is especially welcome on those dark, gray fall afternoons.'

How to Clean Windows with Glycerin

To make a safe, streak-free DIY cleaning solution, Isabella Flores, cleaning expert at Sparkly Maid San Diego, advises, 'Mix one quart, or about one liter, of warm water with two to three drops of pure vegetable glycerin [available at Amazon]. Pour the mixture into a spray bottle, or use a clean, soft microfiber cloth dipped in the mixture.'

For this, we recommend the Great Value Multipurpose Microfiber Household Cleaning Cloth available at Walmart.

'Wipe the glass with the cleaner while working from top to bottom,' continues Isabella. 'Then, buff the windows with a clean, dry, soft microfiber cloth to absorb any remaining moisture. The glass will be crystal clear and will prevent dust from settling,' working as a homemade cleaning spray to repel dust.

You can also, as Scott suggests, add a few drops of mild dish soap to your cleaning solution, such as the Dreft Plant-Based Liquid Dish Soap available at Walmart, or use a squeegee to wipe your homemade window cleaner across the glass.

'Use long, even strokes from top to bottom, wiping the rubber blade with a clean cloth after each pass,' advises Karina.

Additional Tips for Brighter Winter Windows

To further brighten a room with a low ceiling, Isabella suggests, 'Start by thoroughly cleaning windows, screens, sills, and frames of dirt and cobwebs. Clean windows on a non-sunny day, as it is better to avoid streaks from rapid drying.

'In winter, try to avoid heavy curtains or dusty blinds that inhibit natural light. Mirrors or other reflective décor placed near the newly cleaned glass can help to reflect light and ultimately add a brighter feeling to an entire room.'

Additionally, Karina recommends trimming nearby shrubs or tree branches, as 'clear sight lines mean more light can actually reach your windows,' and using light-colored curtain ideas. 'Heavy or dark drapes block sunlight even on clear days,' she explains.

What to Shop

All prices were correct at the time of publication.

Meet the Experts

Isabella Flores

Isabella is a cleaning expert and professional organizer at Sparkly Maid San Diego. As a senior team member, she helps families create spotless, clutter-free homes using eco-friendly products and trusted cleaning systems. Known for premium results and reliable service, Isabella makes organizing and cleaning simple for clients across San Diego.

Scott Schrader

Scott is a cleaning expert at CottageCare, which is a leading home cleaning company with over 41 locations nationwide. He's a big believer in using eco-friendly cleaning solutions like baking soda and glycerin.

Karina Toner

With numerous contributions in Homes & Gardens, Real Homes, The Spruce, and many more, Karina has extensive knowledge of both commercial and residential cleaning, and knows better than anyone how to clean to boost the beauty of a home.

'It's amazing what clean windows can do to the feeling of warmth and welcome in a room, especially those days when sunlight can be lacking,' says Scott, and we completely agree.

You can also handily use any leftover glycerin for stain removal.