# Etched glass

## Overview

Etched glass is one of two popular treatments the glass surface of a pen display. (The other is called an [Anti-glare film](/drawtab/guides/pen-displays/anti-glare-film.md)).

"Etched glass" describes a microscopic texture applied to a glass surface.

Etched glass provides two benefits

* It reduces glare and reflections due to light hitting the tablet. Etched glass does this my scattering that light.
* Provides more "grip" for the pen. Without the etching a pen would feel "slippery" on the smooth glass surface.

<figure><img src="/files/boRW8FgwGFQ18LzrweWu" alt="" width="563"><figcaption></figcaption></figure>

## Sparkle

Like other anti-glare treatments, etched glass can produce an effect called **anti-glare sparkle** which is a "rainbow noise" effect. Depending on the tablet there will be a little or lot of this sparkle. Learn more here: [Anti-glare sparkle](/drawtab/guides/pen-displays/ag-sparkle.md).

## Permanence

Etched glass is a permanent treatment to the glass. It cannot be removed.


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