How to Clean Windows Without Streaks: Water, White Vinegar and Washing-Up Liquid

In France, as elsewhere, windows quickly reveal dust, pollen and fingerprints as soon as sunlight shines through them.

Published on 13 June 2025, the source article, from a media outlet not named on the supplied page, suggests a homemade solution made with water, white vinegar and washing-up liquid. Its main point is not solely the cleaning solution: when you clean and which drying material you use are equally important.

Why windows appear dirty so quickly

A clean window never stays that way for long. Airborne dust settles on the glass, as does pollen during certain times of year. Fingerprints, rain splashes and marks made by pets also make upkeep more difficult.

Sunlight does not make windows dirty. Instead, it makes existing flaws easier to see. A thin layer of dust that had gone unnoticed can suddenly look like a hazy film. Wiping streaks also become particularly obvious when light falls directly onto the glass.

“The outcome depends just as much on wiping and drying as on the liquid applied to the window.”

The source page highlights a common mistake: relying entirely on a window cleaner. A poorly measured product, one used too generously or not removed properly can leave residue behind. This may attract further dust and leave the glass looking dull.

Heat: a misleading ally when cleaning windows

Cleaning windows in direct sunshine may seem convenient. The glass dries rapidly, which can appear to save time. In reality, that speed can cause difficulties. The liquid evaporates before wiping is complete, making marks more likely.

This is especially noticeable on large patio doors, south-facing windows or panes that are already warm. The product may dry unevenly in patches. Achieving an even finish then becomes harder, even after wiping with the cloth several times.

Choosing a more suitable time

Overcast weather, a cool morning or late afternoon will usually provide better conditions. There is no need to wait for perfect weather, but it is best to avoid allowing the glass to become very hot in the sun.

• First remove dust from the frame and window ledges.
• Do not spray an excessive amount of the mixture.
• Clean one small area at a time.
• Wipe immediately with a clean, dry cloth.
• Use another side of the cloth once the fabric becomes damp or dirty.

This approach reduces the chance of moving grime from one part of the pane to another. It also prevents deposits collected in frame grooves from being spread over the glass.

The homemade window-cleaning solution suggested by the source

The recipe in the article uses everyday household products. To make it, the source advises combining two cups of water, one cup of white vinegar intended for cleaning, and one teaspoon of washing-up liquid.

Pour the mixture into a spray bottle and shake it before use. Apply only a small amount to the glass rather than soaking it. The washing-up liquid helps lift greasy dirt, while white vinegar is commonly used in household cleaning for its descaling properties.

“The source recommends finishing the cleaning process with a microfibre cloth to reduce residue and scratches.”

Claims made for this solution should be treated with caution. The source page, for example, attributes a disinfecting effect to it. However, a household mixture should not be considered a disinfectant without clear information from the manufacturer on concentration and contact time. For windows, the main aim remains the removal of dust, greasy marks and visible smears.

Using a microfibre cloth correctly

A microfibre cloth is used to trap particles and absorb moisture. It must be clean: microfibre already carrying grease, detergent or dust may leave a film on the glass.

For a standard-sized window, making steady passes from top to bottom makes missed areas easier to identify. On a patio door, working in vertical strips prevents the product from drying too quickly. A second dry microfibre cloth can be useful for finishing the corners and edges.

What applies in France

In France, this cleaning routine involves no administrative procedure or specific regulation. It is simply part of ordinary household cleaning. Window-cleaning products, household vinegar and microfibre cloths are readily available in shops.

A few precautions are still worthwhile. Even diluted, vinegar is unsuitable for every surface. It is better not to leave it in contact with acid-sensitive materials, including certain limestone-based stones. For frames, seals, handles and ledges, testing a less visible spot first will help confirm that there is no unwanted reaction.

Never mix vinegar with bleach or with another cleaning product whose ingredients are unknown. Combining household products can create dangerous fumes. A straightforward mixture, used sparingly in a ventilated room, is easier to control.

A method for the most common marks

Very dirty windows often require two stages. First, remove dust and dirt from the frame. Then clean the glass itself. Spraying liquid directly onto a pane covered in particles can create a fine sludge and increase the number of passes required.

For fingerprints near handles, localised wiping will often be enough. Outdoor marks caused by rain or pollution may require the process to be repeated with a rinsed microfibre cloth that has then been thoroughly wrung out.

Windows are not the only surfaces concerned. The same focus on drying can also be used for mirrors, provided the compatibility of the mixture with their frame is checked in advance. In every case, a clean cloth, a small amount of product and glass that is not heating up in the sun are the simplest combination for reducing streaks.