Frequently asked questions

What active ingredients are in the mask?

MGM-1: our patented mineral complex. It generates its own microcurrent the moment you press the mask to your face, with no device needed.

Snow Mushroom (Tremella Fuciformis) Extract: holds up to 500 times its weight in water. Expect skin that looks plumper and more hydrated.

Copper Tripeptide-1 & Argireline (peptide complex): Copper Tripeptide-1 supports the appearance of skin renewal, and Argireline works on the appearance of expression lines. Expect a gradual softening in the look of fine lines with consistent use.

Niacinamide (confirmed at 118% of specification in the base formula): works on the look of tone, pores and redness. Expect a brighter, more even-looking complexion over time.

Centella Asiatica: calms and supports the skin barrier alongside Niacinamide. Expect calmer-looking skin.

What does the mask do?

The moment you press the mask to your skin, it generates its own microcurrent, no device required.

In a two-week clinical study of the mask technology the so mask is built on, with twice-daily use:

  • a 20.14% reduction in the number of visible wrinkles around the eyes
  • a 21.21% improvement in the appearance of pigmentation
  • 73.44% more moisture in the skin immediately after one mask (measured on the forearm)
  • still 52.74% above where it started 100 hours later
What is microcurrent?

Microcurrent is a very low-level electrical current, the same idea behind the professional microcurrent facials aestheticians have offered for decades. The so mask makes its own: press it onto your face and the minerals inside convert that pressure into a microcurrent, with no device, battery or charger.

In a clinical study of the mask technology the so mask is built on, the number of visible wrinkles fell by 20.14% after two weeks of twice-daily use, and hydration was still 52.74% above where it started 100 hours after a single mask (measured on the forearm).

How often should I use the mask?

The masks can be used whenever you want, as long as your skin stays happy. To add a mask to your ongoing routine, take our quiz to find out what we recommend.

Am I supposed to feel tingles?

A tingling sensation while the mask is on, and often for a few hours afterwards when you touch your skin, is completely normal.

How strongly you feel it comes down to your skin type and how firmly you pressed, so some people notice it a lot and others barely at all. If it tips into uncomfortable, or it's still there days later, give your skin a break before the next one.

what is microcurrent?

Your skin is electrically active: its cells communicate through tiny electrical signals, all the time. Microcurrent is a very low-level electrical current, and the so mask makes its own from nothing but the pressure of your hands. In a clinical study of the mask technology it's built on, hydration was still 52.74% above where it started 100 hours after a single mask (measured on the forearm).

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what is microcurrent?

Fewer visible lines.

In a two-week clinical study of the mask technology the so mask is built on, with twice-daily use, the number of visible wrinkles around the eyes fell by 20.14%.

73.6 volts.

Measured at up to 73.6 volts peak-to-peak by the Korea Electronics Technology Institute, from nothing but the pressure of your hands.

Hydration that lasts 100 hours.

The hydrogel is packed with moisture-binding actives like Snow Mushroom and hyaluronic acid. In a clinical study of the mask technology, moisture was still 52.74% above where it started 100 hours after one mask (measured on the forearm).

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