100% authentic Korean-market formulas

Free US shipping on orders of $100 or more. 100% authentic Korean-market formulas. Ships from our California warehouse, at your door in 3-5 days. Intact Korean batch codes on every unit.

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KOREAN PHARMACY

COSRX

Advanced Snail Mucin Glass Glow Hydrogel Mask_3ea (3ea)

A snail-second hydrogel mask with five ceramides, hydrolyzed collagen and a stack of hyaluronate forms for a glassy, rested look.

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$14.99Comparable US listings run $15.00 (3 dated US observations, checked 10 September 2026)
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Suited to
SensitiveCompromised barrierTexturedCongested
Helps with
Compromised, over-exfoliated skinBarrier weaknessEarly environmental damageRough surface texture

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  • Dispatched within 2 business days

How it works

A hydrogel mask holds its essence inside a gel sheet, which is why it stays put instead of drying out halfway through the way a paper sheet can. This one carries snail secretion filtrate near the front of its list, with niacinamide, panthenol and allantoin behind it. It goes on after toner, in place of the serum step, and what the sheet leaves behind is pressed in rather than rinsed off. Skin that looks dull and flat rather than congested is the case it fits. Two or three evenings a week, as an addition to the routine rather than a replacement for it.

Key benefits

  • Snail secretion filtrate is the second ingredient on the list
  • Five ceramide entries support a supple, cared-for barrier feel
  • Hydrolyzed collagen and five hyaluronate entries layer the hydration
  • The hydrogel turns transparent as it warms, a cue it has settled in

Key actives

Snail Secretion Filtrate

the glass-skin hydrator, high on the list

Ceramide NP

supports the feel of an intact skin barrier

Hydrolyzed Collagen

surface film-former for a plumper look

Niacinamide

supports a brighter, more even look

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COSRX Advanced Snail Mucin Glass Glow Hydrogel Mask_3ea (3ea)

COSRX Advanced Snail Mucin Glass Glow Hydrogel Mask_3ea (3ea)

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How to use

  1. Use the Advanced Snail Mucin Glass Glow Hydrogel Mask after toner, in place of your serum step, in the evening.
  2. Line the sheet up at the eyes first, then smooth it outward across the face so no air sits underneath.
  3. Take it off at the time the pack gives, press in the essence left on the skin, then follow with moisturizer.
  4. Two or three evenings a week. Do not wear it longer than the pack says; a hydrogel that has dried out pulls moisture back off the face.

Worth knowing

  • Snail secretion filtrate is animal-derived, so this is not a vegan formula.
  • Collagen here is not plant-derived, so this is not a vegan formula.

Reviews

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We’re on gram!

Creators trying on authentic Korean skincare routines and products from us.

  • Rating a shelf of Dr. Althea products one by one.

    Jasmine Loo · YouTube

  • Two hydrating serums side by side, IUNIK and Dr. Althea.

    Kristin · YouTube

  • A walk through the Dr. Althea serum lineup and who each one suits.

    auraofmahmuda · YouTube

  • A blunt first take on the Dr. Althea range.

    Lexi Chang · YouTube

  • A first look at the viral 345 Relief Cream before buying.

    Shelley Nayak · YouTube

  • A first try of the Dr. Althea serum on camera.

    Hannah Ziad · YouTube

COSRX, Korean-market original

Glass-glow hydrogel mask, 3 ea, with Snail Secretion Filtrate and five Ceramides.

Verify your unit when it arrives

Verify your unit when it arrives

Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.

COSRX verifies units itself. Find the verification page on cosrx.com and enter the batch number and expiration date printed on your unit. Read them off the package rather than from us, which is the point.

Source: COSRX FAQ

On the unit itself

  • The Korean-market barcode, unaltered from the retail package.
  • The manufacturer’s batch code, exactly as the maker printed it.

정품Genuine article, Korean-market stock

What professionals say

What professionals say

What skin-care professionals say about the key actives in this formula, quoted from the medical sources linked beside each.

  • The hyaluronic acid and peptides in snail mucin may stimulate the production of collagen and elastin.

    Hadley King, MDClinical instructor of dermatology, Weill Medical College of Cornell, Women's Health
  • Ceramides are part fatty acid and part amino acid and are able to be the grout that keeps the building blocks of the skin together and functioning as a barrier between the inside and outside world.

    Amy Kassouf, MDDermatologist, Cleveland Clinic
1 more professional perspective
  • Topical collagen is a very large molecule that's too big to absorb into the skin.

    Michelle Henry, MDDermatologist, Cosmopolitan

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