Sonax Spray vs Liqui Moly Foam car glass cleaner – Which one is best?
Today I am testing 2 of my favorite car glass cleaners. Which one is best for cleaning your car’s windows? A traditional mist spray by Sonax or a foam spray by Liqui Moly. Let’s test it out together and write me in the comments which one is your favorite.
- SONAX ScheibenKlar Glass Cleaner (Amazon): https://link.amazon/B04ymlXde
- Liqui Moly Foam Glass Cleaner (Amazon): https://link.amazon/B024qML2a
What are the benefits of foam spray car glass cleaners?
Foam spray car glass cleaners offer several distinct advantages over standard liquid trigger sprays, particularly when cleaning vertical or inverted glass surfaces like windshields and side windows.
Key Advantages of Foaming Glass Cleaners
- Cling and Dwell Time
- Unlike liquid sprays that immediately run down the glass, aerosol foam expands and clings to vertical surfaces.
- This clinging action allows the active surfactants and solvents longer contact time to break down stubborn grime, bug splatters, tree sap, and vinyl outgassing haze.
- No Dripping onto Interior Surfaces
- Liquid cleaners frequently drip down the inside of the windshield, pooling into the dashboard gap, leather trim, or electronic displays.
- Foam stays where it is sprayed, protecting sensitive dashboard plastics, polyurethane materials, and instrument clusters from overspray.
- Superior Cutting Power for Vinyl Haze & Nicotine
- Interior windshields accumulate a stubborn, oily film caused by plasticizers evaporating from dashboard materials (outgassing).
- Foaming agents trap these oily residues within the foam matrix, lifting them off the glass rather than pushing them around.
- Slower Evaporation Rate
- Liquid glass cleaners can dry too quickly on warm glass, leaving behind streak-inducing dried chemical residue.
- Foam maintains moisture longer, giving ample time to work the product with a microfiber towel before buffing dry.
- Uniform Visual Coverage
- The white foam provides a clear visual indicator of where product has been applied, ensuring complete coverage without missing spots or over-saturating specific areas.
Recommended Technique for Streak-Free Results
- Use Two Microfiber Towels: Use a waffle-weave or low-pile glass towel to spread the foam and wipe away dissolved grime. Follow immediately with a clean, completely dry waffle-weave towel to buff out any residual moisture.
- Control Overspray: For tight interior spots near the lower windshield edge or side pillars, spray the foam directly onto your microfiber towel rather than spraying the glass.
- Tint Safety Check: Ensure the aerosol formula is labeled ammonia-free to avoid degrading aftermarket window tint films.
Feedback
Which glass cleaner do you think performs best on your car? A spray mist like the Sonax glass Cleaner? Or the foam spray glass cleaner like the one from Liqui Moly? Check out how I also deep clean my car windshield with a Sonax P-ball here. Write me in the comments and please support my work by subscribing to my YouTube channel.