The Only Korean Mask Review That Actually Measured the Results

Every review of this viral Korean mask says the same thing: “it’s so hydrating,” “my skin glows.”

But “hydrating” is the easiest word in skincare to say and the hardest to prove. So instead of taking anyone’s word for it, I used a hydration meter, a corneometer — the device that reads how much moisture is actually in your skin and estimates its “skin age” — and measured my own skin before and after.

Here’s exactly what it recorded.

First, my starting point

Before the mask went anywhere near my face, I measured my bare skin. The numbers weren’t pretty:

Hydration	Oil	Elasticity	Overall
26%	25%	47%	71

In fairness to my skin, I ran this at the hardest possible time, on a long-haul flight, where cabin air is drier than most deserts. But that’s the uncomfortable part: your skin is quietly losing water all the time.

Central heating in winter, air-con in summer, hot weather, hard water, and the simple fact that skin holds less moisture as it ages.

That tight, dull, tired look no cream quite fixes? That’s dehydration. A flight just makes it extreme — which is exactly why it’s such a good test. If a mask can move the numbers up there, it can handle your Tuesday.

Why this isn’t like the masks on your shelf

Most masks are a thin sheet of soaked paper. You leave it on twenty minutes, it dries out, you bin it. This is different — a thick hydrogel you leave on for hours, even overnight. It’s made with hyaluronic acid and hydrolysed bio-collagen.

One honest thing, because I check this professionally: just because a product says collagen doesn’t mean it’s rebuilding collagen in your skin. What actually matters is whether it absorbs instead of sitting on the surface — and hydrolysed bio-collagen is processed small enough to do exactly that. That’s the whole difference between a mask that works and one that just feels nice for ten minutes.

The part I didn’t expect

After a few hours, the mask turns from opaque white to completely clear. That’s your cue the formula has absorbed and it’s ready to peel — and it’s something a paper mask simply can’t do, because there’s nothing in it to absorb in the first place. I’ll be honest, watching it disappear into my skin was the moment I stopped being a skeptic.

The reveal

I peeled it off and the glass-skin look was instant — dewy, plump, lit from within. But a glow can be superficial. So I did the only thing that would actually settle it: I measured again.

BEFORE

Hydration	Oil	Elasticity	Overall
26%	25%	47%	71

AFTER

Hydration	Oil	Elasticity	Overall
45%	20%	55%	79

My hydration nearly doubled. Elasticity climbed too.

Reading from a single real-world test using a consumer hydration meter (corneometer). Individual results vary; this is not a clinical study.

So, is it worth the hype?

For once, yes. I went in expecting to write the review that finally debunked it, and the meter wouldn’t let me. It’s not a generic mask, and it’s not magic — it’s the right format doing what most masks only claim to: actually putting moisture back and keeping it there.

Right now there’s a summer offer — up to 75% off, with free gifts and free shipping — which works out to a fraction of a single £150 facial. And it’s backed by a 60-day money-back guarantee, so if your own before-and-after doesn’t convince you, you get your money back.

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