Why Certain Sunglass and Optical Lenses Scratch and Smudge More Than Others?

Why Do Glasses & Sunglasses Lenses Smudge So Easily?

Whether you wear sunglasses for UV protection or optical frames for vision correction, there’s one universal frustration: smudged lenses. Fingerprints, skin oils, sunscreen, makeup, and everyday dust build up fast, and some lenses definitely smudge more than others.

The good news: lens smudging isn’t “random.” It usually comes down to lens quality, material, coatings, and how you clean them.

Quick Answer: What Causes Lens Smudging?

• Lower-quality lens surfaces can be more prone to oils and dirt sticking.
• Cheaper materials may have micro-texture or softness that holds residue.
• Low-grade coatings can smear more easily and show fingerprints.
• Incorrect cleaning spreads oils rather than removing them.

1) Does Lens Quality Affect Smudging?

Yes, lens quality has a significant impact on how quickly lenses show smudges and how easily they wipe clean.

Higher quality lenses typically have smoother, more consistent surfaces and better finishing processes. This makes it harder for oils to cling and easier for you to clean lenses without smearing.

At AM Eyewear, we use premium lenses designed for optical clarity and daily comfort. You can learn more about our lens technology here.

2) Does Lens Material Affect Smudging?

Yes. The lens material influences how easily oils stick and how well coatings bond to the surface.

• Glass lenses can be more scratch resistant and may feel less “grabby” with oils, but they’re heavier and can be less comfortable for everyday wear.
• Low-grade plastic lenses can be more prone to smearing, especially if the surface is softer or more porous and holds residue.
• High-quality polymer lenses are lightweight and comfortable, and when paired with high-grade coatings, they can deliver excellent clarity and smudge resistance.

Not all “plastic” lenses are equal; the difference is in the material quality and finishing.

3) Do Lens Coatings Affect Smudging?

Absolutely. Most modern lenses include coatings for performance and comfort, such as anti-reflective, scratch resistance, polarisation, or hydrophobic/oleophobic layers.

Coatings can either:

• reduce smudging (by resisting oils and helping lenses wipe clean), or
• increase visible smears (if the coating quality is low and attracts residue).

AM Eyewear lenses feature high-quality coating systems designed to improve clarity, comfort, and ease of cleaning. For example, our lenses use advanced anti-reflective systems to improve visual comfort and reduce distracting reflections. Learn more on our lenses page.

4) Does Cleaning Method Affect Smudging?

Yes, even the best lenses will smear if they’re cleaned the wrong way.

The most common issue is cleaning with a dry cloth on an oily lens. That spreads residue rather than removing it, creating the “never-ending smear” effect.

Paper towels, tissues, and rough fabrics can also cause micro-scratches over time, which can make lenses appear dirtier more quickly.

How to Clean Lenses Properly (Step-by-Step)

For the clearest result, follow this quick routine:

1. Rinse the lenses with lukewarm water to remove dust particles (so you don’t rub grit into the surface).
2. Use a small drop of gentle dish soap (no moisturisers) and lightly rub both sides with clean fingers.
3. Rinse thoroughly until all soap is removed.
4. Dry with a clean microfibre cloth (freshly washed, no fabric softener).

If you use a lens spray, choose one designed for coated lenses and always use a clean microfibre cloth.

What to Avoid (Common Mistakes)

• Cleaning lenses dry when they’re oily
• Using tissues, paper towels, or clothing fabric
• Using hot water (can stress some coatings)
• Using harsh cleaners (window cleaner, alcohol-heavy solutions) unless approved for coated lenses
• Using a dirty microfibre cloth (it just spreads oil)

Why AM Eyewear Lenses Stay Clearer

Smudging is often a sign of lens and coating quality. AM Eyewear lenses are engineered for clarity, comfort, and daily wear, using high-quality lens materials and coating systems designed to reduce visual fatigue and make lenses easier to clean.

If you want to go deeper into what makes our lenses different, including materials, coatings, and UV protection, visit Our Lenses.

What to Shop Next

• Current Collection – our newest releases and refined designs
• Women’s Sunglasses – handcrafted styles built for comfort
• Men’s Sunglasses – engineered fit and premium materials

If you’re deciding between a few styles, Try Before You Buy lets you compare frames at home before committing.