9H vs. Ceramic vs. Liquid: Which Screen Protector Type Is Best?

Walk down the accessories aisle or scroll any marketplace and you'll meet three main families of screen protection: tempered glass (usually 9H rated), ceramic protectors, and "liquid glass" coatings. They're not interchangeable — here's the honest breakdown.

Tempered glass (9H)

What it is: a pane of chemically hardened glass, cut for your model, glued onto the screen.

Strengths: the best real-world impact protection, true scratch resistance, feels like the original screen, installs invisibly with an alignment frame, and peels off cleanly when you replace it. The 9H rating is your benchmark for scratch hardness.

Weaknesses: adds a fraction of a millimeter of thickness; can crack on a hard impact — which is exactly its purpose.

Ceramic protectors

What it is: a hybrid material — usually glass or film infused with ceramic particles — marketed as combining hardness with flexibility.

Strengths: often slightly more shatter-resistant than pure tempered glass; feels glassy.

Weaknesses: hardness ratings are murkier and less standardized than 9H; marketing claims often outrun testing; price sits above tempered glass without clear everyday benefit.

Liquid glass ("nano" coatings)

What it is: a wipe-on solution that deposits a thin silicon-dioxide layer on the screen.

Strengths: completely invisible, no edge to lift, adds zero thickness, works on curved edges.

Weaknesses: minimal impact protection — it's a scratch-resistant coating, not a sacrificial layer. Once applied it can't be removed, and its claimed hardness ratings are largely unmeasurable.

Our verdict

There's a reason tempered glass is what most protection brands — including us — build on: it's measurable (9H), replaceable, and it physically stands between your display and the ground. The Arctiqo™ 3-in-1 Screen Protector pairs 9H tempered glass with an optional 28° privacy filter and lens protection, installed bubble-free with the tap-on alignment frame in under a minute.