Artisan hand-filing a tortoise acetate frame in the Maison Mata workshop

Acetate or metal: how to choose (and care for) your frames

Guide, 4 min read, July 2026

The material sets the weight, the comfort and the way your glasses age. Here's how to choose between acetate and metal, and keep either one looking good for years.

Almost all glasses fall into two material families: acetate or metal. It's the first thing an optician looks at, because the material decides the frame's weight, its comfort, its style and how you will care for it. Neither one is “better”: they answer different needs.

Key takeaways
  • Acetate: thick and colourful, hides thick lenses, hypoallergenic.
  • Metal: thin, light and discreet, a little more upkeep.
  • The right choice depends on your prescription, your skin, your style and your comfort.
Model wearing colourful acetate Maison Mata sunglasses on a studio backdrop
Acetate holds deep, warm colours you cannot get from standard plastic

Acetate or metal: the difference in one sentence

Acetate is a thick, coloured material that adds character and hides thick lenses well. Metal is thin, light and discreet, but a little more fragile. If you want presence, think acetate; if you want lightness and restraint, think metal.

What acetate actually is

Acetate is a plant-based material made from wood pulp and cotton fibres, not petroleum plastic. Three concrete consequences:

  • It is hypoallergenic. Good for sensitive skin that reacts to some plastics or metals.
  • It holds deep colours. It is dyed throughout: tortoise, marble and smoky honey come from that.
  • It is worked by hand. Cut, polished and buffed over several days, and no two frames are ever exactly alike.

What metal actually is

By “metal” we mean titanium, stainless steel and fine alloys. What defines them: a fine line, lightness, and millimetre adjustment. The trade-off: small screws and hinges that are more sensitive over time.

No material is better. The right one is the one that suits your face.

Which material should you choose? 4 concrete criteria

  1. Strong prescription? Acetate hides lens thickness better.
  2. Sensitive skin? Hypoallergenic acetate, or titanium on the metal side.
  3. Which style? Bold and colourful leans acetate. Sober and minimal leans metal.
  4. Does weight matter? For all-day wear, light metal is often more comfortable.

How to care for your frames

Acetate: clean with lukewarm water and a drop of mild soap, dry with a microfibre cloth, and keep it away from heat, which softens the material. Metal: wipe with a soft cloth and regularly check the small hinge and pad screws.

In short

Acetate offers warmth, colour and handcraft; metal offers lightness, fineness and discretion. Choose based on your prescription, your skin, your style and your comfort, and try both on your face.

Try acetate and metal in store.Our stores

This article is general information and does not replace an eye exam or personalised advice from a qualified optician.

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