HYDRATION HERO

ST.SAJ Glass Mask jar with cream swatch on white

Founder Emmylou applying ST.SAJ Glass Mask to face

ST.SAJ Glass Mask ingredients - Ceramide Complex CLR, Madecassoside, MultiMoist, Beta Vulgaris Extract

ST.SAJ Glass Mask benefits - glass skin effect, hydration, soothes redness, overnight pampering

ST.SAJ Glass Mask verified customer review and testimonial

Founder Emmylou holding ST.SAJ Glass Mask - flood skin with hydration for glass skin

GLASS MASK 50ml

Name: GLASS MASK 50ml
Brand: ST.SAJ
SKU: SJ3190.1
Price: 69.95 AUD
Availability: InStock

$69.95~~$69.95~~ Save 0%

4.8

Rated 4.8 out of 5 stars

Soothing

Hydrating

Protecting

Detoxifying

Free AU Shipping On Orders Over $150

MultiMoist CLR™ delivers clinical-strength hydration at every layer
Madecassoside soothes redness and inflammation
Ceramide Complex CLR™ rebuilds the lipid barrier from the inside out
Prebiotic (Fructooligosaccharides) balances the skin's microbiome
Salicylic acid gently resurfaces so hydration absorbs on a clean canvas
Use as a 20-minute rinse-off or leave overnight for maximum results

Your skin has never looked this hydrated. Or this good.

Meet the glass mask that actually delivers. MultiMoist CLR™ Glass Mask is a clinical-strength overnight and rinse-off moisture treatment that floods skin with hydration, rebuilds your barrier, and calms redness in 20 minutes or while you sleep. You can also where it underneath your makeup.

How it works:

Hydrolysed Hyaluronic Acid, we're talking hydration that goes beyond the surface. Hydrolysed HA is the smaller-molecule form that actually penetrates deeper into the skin, rather than just sitting on the surface. Paired with Glycerin and a Humectant Complex that binds moisture and refuses to let go.

Phospholipids + Sphingolipids rebuild your skin's lipid barrier from the inside out. This is the step between you and glass skin. No barrier, no glow.

Fructooligosaccharides (Prebiotic) feed the good bacteria on your skin to balance your microbiome because healthy skin starts beneath the surface.

Madecassoside + Beet Root Extract target redness, inflammation, and dullness simultaneously. Calm and bright. The combination your skin has been waiting for.

Salicylic Acid gently resurfaces and unclogs so all that hydration has a clean canvas to work on.

Natural Fragrance of Bergamot, Geranium, and Citrus Aurantium.

The result: skin that looks lit from within. Poreless. Bouncy. Like you've slept 9 hours and drank 3 litres of water.

Use 1–2 times a week. Wake up to glass.

Start with freshly cleansed skin.
Apply as a mask once per week - leave for minimum 20 minutes, or overnight.
Rinse and continue with your essences, serums and SUPREME SKIN 7.
Pro tip: For an extra hydration boost, layer GLASS MASK over PEPTIDE POWER ESSENCE and your favourite serum, then lock everything in with SUPREME SKIN 7 and go to bed.

Aqua, Glycerin, Pentylene Glycol, Propanediol, Polyacrylate Crosspolymer-6, Fructooligosaccharides, Beta Vulgaris (Beet) Root Extract, Phospholipids, Sphingolipids, Sclerotium Gum, Potassium Lactate, Salicylic Acid, Madecassoside, Parfum (Natural Fragrance), Hydrolyzed Hyaluronic Acid, Citrus Aurantium Peel Oil, Pelargonium Graveolens Flower Oil, Citrus Aurantium Bergamia Peel Oil, Benzyl Alcohol, Sorbic Acid, Anisic Acid, Sodium Citrate, Lactic Acid, D'Limonene, Linalool, Geraniol, Citronellol, Citral, Phenoxyethanol, Sodium Citrate.

No artificial colours, parabens, silicones, phthalates, chemical UV filters.

Complete the Routine

ST.SAJ Hyaluronic Smoothing Complex serum bottle with water droplets on a grey background

HYDRATE WITH

$54.95

HYALURONIC SMOOTHING COMPLEX

Quick Buy

ST.SAJ Clarity Trio - NiaGlow Clarity Boost, Radiant Super C and Skin Refining Glaze product flat lay

BUILD WITH

$129.00 ~~$164.85~~

CLARITY TRIO

How to Use

Start with freshly cleansed skin.
Apply as a mask once per week - leave for minimum 20 minutes, or overnight.
Rinse and continue with your essences, serums and SUPREME SKIN 7.
Pro tip: For an extra hydration boost, layer GLASS MASK over PEPTIDE POWER ESSENCE and your favourite serum, then lock everything in with SUPREME SKIN 7 and go to bed.

Screen_Shot_2024-09-17_at_10.45.39_am.png

4.8

Rated 4.8 out of 5 stars

Based on 32 reviews

Total 5 star reviews: 26 Total 4 star reviews: 5 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0

97%would recommend these products

Open Okendo Reviews in a new window

Write a Review (Opens in a new window)

32 reviews

Sort

VT
Vicki T.
Verified Buyer
Reviewing
GLASS MASK 50ml
I recommend this product
Rated 5 out of 5 stars
2 days ago
Glass mask
I have been using this product off and on since finding ST.SAJ. I love how plump my skin is and notice a big difference when I do not use it for a while, the difference was a shock! I am 66 and people who haven’t seen me for a while comment on how good my skin looks. It is one that will now be on repeat.
Was this helpful?
SH
Samantha-Jade H.
Verified Buyer
Reviewing
GLASS MASK 50ml
I recommend this product
Rated 5 out of 5 stars
1 week ago
Glass Skin in a Jar!!
Absolutely obsessed with this mask! My skin feels so soft, hydrated and smooth after every use. It gives my skin the most beautiful glow and makes it look fresh and healthy. I noticed a difference straight away and now it’s become part of my weekly routine. A little goes a long way too, so the jar lasts ages. Highly recommend if you want that glowy “glass skin” look! 💖
Was this helpful?
SS
Shelley S.
Verified Buyer
Reviewing
GLASS MASK 30ML
I recommend this product
Rated 5 out of 5 stars
1 week ago
Mask
I have been using this at night and the hydration back into my skin has been amazing
Was this helpful?
MG
Melinda G.
Verified Buyer
Reviewing
GLASS MASK 30ML
I recommend this product
Rated 5 out of 5 stars
2 weeks ago
Glass Mask
Wonderful product. Use every second night, followed by supreme 7. Love it!!
Was this helpful?
LT
Lisa T.
Verified Buyer
Reviewing
GLASS MASK 30ML
I recommend this product
Rated 5 out of 5 stars
2 weeks ago
Glass mask
This is amazing I started using it overnight once a week now I put u set my makeup daily love love
Was this helpful?

Australian Made

VEGAN & CRUELTY FREE

A: Madecassoside is the active compound from centella asiatica (also called cica or tiger grass). It's a plant extract that's been used in skincare for centuries, especially in Asian beauty routines.
Here's what it does: It calms irritation, supports skin barrier repair, and reduces redness. If your skin is reactive, sensitised, or inflamed, madecassoside helps settle things down.
In Glass Mask, we included it specifically to balance the gentle exfoliation from salicylic acid. So while the SA is working to clarify, madecassoside is simultaneously soothing and repairing. That's the ST.SAJ difference, actives without the irritation.
Glass Mask is hydration-forward with barrier-supporting ingredients. You get multiple types of hyaluronic acid for deep moisture, madecassoside to soothe and repair, and gentle salicylic acid for light exfoliation without stripping. We added phospholipids and sphingolipids to support your skin barrier, plus beet extract for antioxidant protection. It's basically a hydration + barrier repair treatment disguised as a mask.
Use 1-2 pumps and apply evenly across your face and neck.
How to use it:

Quick hydration boost: Leave on for 20 minutes, then rinse
Intensive overnight treatment: Leave on overnight for maximum hydration

Pro tip: Layer it over your serums and essence (like Peptide Power Essence + Hyaluronic Smoothing Complex), then lock everything in with Supreme Skin 7 on top for a seriously hydrated base.
Yes, all ST.SAJ formulations are proudly Australian made, produced right here in Melbourne.

We are officially licensed to carry the Australian Made logo, reflecting our commitment to local manufacturing, quality control, and supporting Australian industry.

From formulation to filling and packing, our products are developed with care and precision to meet the highest standards.
Yes, ST.SAJ products are formulated to be suitable for use during pregnancy and while breastfeeding.

However, we always recommend reviewing each individual product page and consulting your healthcare professional before introducing any new skincare during this time.

If breastfeeding, avoid applying products directly to the chest area or anywhere the baby may come into contact during feeding.

If you have specific ingredient questions, our team is always here to help guide you.
Overnight, your skin naturally forms an acid mantle, a protective layer made up of sebum and beneficial lipids that help maintain barrier function and microbiome balance.

In the morning, this protective layer does not require active cleansing. For most skin types, simply rinsing with water is enough before applying your treatment products.

We recommend the following morning approach:

Rinse → Essence → Serums → Moisturiser → SPF

Night-time is when active cleansing is essential to properly remove SPF, makeup, pollution, and daily buildup.

This philosophy supports long-term barrier health rather than over-stripping the skin.

To celebrate ST.SAJ now available in-store at ULTRA Beauty, customers who purchase ST.SAJ products during the promotional period can enter for a chance to have their purchase refunded.

How to enter:
1. Purchase any ST.SAJ product in-store at ULTRA Beauty
2. Post your purchase on Instagram (Story or post) and tag @stsaj.skin
3. Keep your receipt as proof of purchase

Each week for 8 weeks, ST.SAJ will randomly select one winner to receive a refund of their ST.SAJ purchase.

The promotion runs until 8 May 2026.

Important:
• Promotion is run and funded by ST.SAJ only
• ULTRA Beauty is not responsible for or administering this promotion
• Entries must include an original Instagram Story or post featuring the purchased ST.SAJ product and tagging @stsaj.skin
• Instagram accounts must be set to public so entries can be verified
• Receipts must be dated within the promotional period (8 March – 8 May 2026)
• One entry per purchase
• In-store ULTRA Beauty purchases only
• Proof of purchase is required to claim the refund

This promotion is not sponsored, endorsed, administered by, or associated with Instagram.
As part of our SKIN REFINING GLAZE launch. One order placed between 1:00 pm Sunday, 8 March 2026, and 1:00 pm Monday, 9 March 2026 (AEDT) will be randomly selected to receive a full refund.

This promotion applies to one winning order only. The selected customer will be refunded to their original payment method.
We proudly offer Free Shipping on all Australian orders over $150.
Shipping on Australian orders under $150 is a flat rate of $10.00. We also offer express shipping for those that need their skincare in a hurry!
Yes, we do. See our shipping rates at checkout if you are one of our amazing friends abroad.
Please check our Returns Policy for information on returns.
If you believe you’ve had an allergic reaction to a ST.SAJ product, please email glow@stsaj.com straight away. Stop using the product for now, but don’t throw it away. If you’ve used less than 20% off the product we can discuss a refund after our team assesses the images of your reaction.
Selected Ultra Beauty stores. Use our store locator and pop in your postcode to find your nearest store.

Cart0 items

GLASS MASK 50ml

Complete the Routine

How to Use

FAQs