Glass Skin Mask amber jar on porcelain dish
  • Glass Skin Mask amber jar on porcelain dishHero
  • Glass-clear hydrogel texture on a wooden spatulaTexture
  • Lifestyle — dewy, glass-like skin after twenty minutesResult
  • Glass Skin Mask with its embossed paperboard sleevePackaging
  • Before-and-after grid showing improved hydration and toneBefore / after

Rituals · Hydrogel Mask

Glass Skin Mask

20-minute hydrogel · 3% polyglutamic acid + 2% ectoin + heartleaf

4.9264 reviews

A 20-minute leave-on hydrogel designed as a once-a-week barrier reset. Polyglutamic acid holds 5,000 times its weight in water — four times the capacity of hyaluronic acid. Ectoin calms reactive skin. Heartleaf supports the redness piece.

BestsellerLimitedFragrance-freeVegan5 uses per jar
Size
1
$68
Add to bagSave $52 with the set

Free US shipping over $50 · 60-day risk-free returns · Same-day if ordered by 2pm PT

  • Derm-reviewed
    Vellum clinical panel
  • Cruelty-free
    Leaping Bunny certified
  • Carbon neutral
    Refillable amber glass
Why hydrogel

A hydrogel mask is a gel-network of water and humectants that sets into a soft film on the skin. The film keeps the actives in contact with the surface long enough for them to do their work, then re-emulsifies into a residual essence that you press in without rinsing.

We chose polyglutamic acid over hyaluronic for the headline humectant because it holds 5,000 times its weight in water versus hyaluronic acid’s 1,000–1,500. The difference is visible in twenty minutes.

Ectoin is our quiet workhorse — an extremophile-derived stress molecule that calms reactive skin in the way a bowl of chamomile tea is supposed to but never quite does.

How to use

Apply a teaspoon-sized layer to clean, dry skin. Set a twenty-minute timer (or two episodes of something good). Read a book. Drink a glass of water. The mask will set into a soft film, then re-emulsify into a residual essence.

Press the essence into the skin with the pads of your fingers — do not rinse. Follow with serum and moisturizer, or use as the only step before bed.

Most users see best results with weekly use. Twice a week is safe through retinoid season or winter dryness.

Full ingredients

Aqua, Polyglutamic Acid, Glycerin, Propanediol, Ectoin, Houttuynia Cordata (Heartleaf) Extract, Centella Asiatica Extract, Sodium Hyaluronate (Multi-MW), Beta-Glucan, Allantoin, Niacinamide, Panthenol, Bisabolol, Tocopherol, Sodium Hyaluronate, Glycerin, Pentylene Glycol, Allantoin, Panthenol, Sodium PCA, Xanthan Gum, Phenoxyethanol, Ethylhexylglycerin.

Specifications
Format
20-minute leave-on hydrogel
Vehicle base
Aqueous, oil-free
pH
5.6 – 5.8
Fragrance
Fragrance-free
Vegan
Yes
Sensitive skin
Yes — clinically tested
Uses per jar
5 (once a week, five weeks)
Packaging
Amber UV-protective glass
Shipping & returns

Free US shipping on orders over $50. Carbon-offset delivery. 60-day risk-free returns: email hello@vellumbeauty.co for a full refund — even if the jar is empty.

Clean-Tested1,800+ ingredient screen
Dermatologist-ReviewedBoard-certified panel
Cruelty-FreeLeaping Bunny certified
Carbon-NeutralClimate Neutral Certified

The hydration stack

Four molecules. The Sunday-night reset.

We measure mask formulas by the residual essence and the calm of the skin underneath. This is the stack we settled on after two years and six iterations.

3%

Polyglutamic acid

Holds 5,000× its weight in water — 4× the capacity of hyaluronic acid.

2%

Ectoin

Extremophile-derived stress molecule; calms reactive skin.

5%

Heartleaf (houttuynia)

Korean botanical; supports the redness piece.

2%

Centella asiatica

Madecassoside-rich; barrier repair extract.

The twenty minutes

The Sunday ritual, step by step.

The mask is what the package promises. The twenty minutes around it are the rest of the product.

  1. Cleanse

    Marble Cleansing Balm to lift the day, Milk Jelly Cleanser to follow. Pat the skin dry — not damp.

  2. Apply a teaspoon

    A clean, even layer across forehead, cheeks, nose, chin. Use the wooden spatula or your fingers — both are fine. The mask will set into a soft, slightly tacky film in 90 seconds.

  3. Twenty minutes

    Set a timer. Read, watch, or do nothing — that’s the point. Around the fifteen-minute mark the film will start to re-emulsify back into an essence.

  4. Press in, do not rinse

    Press the residual essence into the skin with the pads of your fingers. Follow with Cushion Cream Light or go straight to bed. By morning the skin will read visibly dewier.

Four-week consumer study, 100 participants

Once-a-week use. Hydration measured, not promised.

Independent four-week study, 100 participants, all skin types, Fitzpatrick I–VI. Corneometer measurement at baseline and post-use. Consumer self-grading at weeks 1, 2, and 4.

264 verified reviews

4.9

97% would recommend to a friend

Write a review
★★★★★

The actual definition of a treat-yourself product

Sunday nights, the Glass Skin Mask, and an actual book. Twenty minutes later I have visibly plumper, dewier skin and I’ve calmed down. It is the only mask I have ever fully used up the jar of. Five for five.

Cassia O.

Verified buyer · 75 mL · 12 weeks of use

★★★★★

Saved my post-retinoid face

I went too hard on a retinol last winter and my barrier was wrecked for months. This mask was the first thing that calmed the flush without breaking me out. I use it twice a week through the winter now and weekly otherwise.

Theo S.

Verified buyer · 75 mL · 14 weeks of use

★★★★★

Genuine glass-skin finish, not hype

I’ve tried every variation of this mask from Korean to French and this is the formulation that actually leaves my skin looking like the lighting from a perfume ad. Heartleaf in particular makes a visible difference on my redness.

Mei W.

Verified buyer · 75 mL · 8 weeks of use

From the formulation lab

“We went through six iterations of this mask. The first three felt nice in the jar but didn’t move the corneometer reading. The fourth moved the reading but stung on reactive skin. The fifth was the one — and the sixth was the one we shipped.”

Maya ReyesHead of Formulation · Vellum Lab, Echo Park

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