REFILL

ST.SAJ Glass Mask with cream swatch on grey background.

Founder Emmylou in blue bikini by pool holding ST.SAJ Glass Mask.

Close-up of Glass Mask gel texture, key ingredients labelled: Ceramide Complex CLR™, Madecassoside, MultiMoist™, Beta Vulgaris Extract.

Founder Emmylou holding ST.SAJ Glass Mask and refill pouch side by side.

Founder Emmylou touching her cheek, holding Glass Mask, text: why we love it, glass skin effect, intense hydration, pamper your skin overnight, soothes redness & inflammation.

Founder Emmylou close-up holding ST.SAJ Glass Mask, quote: flood your skin with intense hydration for the coveted glass skin effect.

GLASS MASK REFILL 30ml

Name: GLASS MASK REFILL 30ml
Brand: ST.SAJ
SKU: SJ3213
Price: 44.95 AUD
Availability: InStock

Ceramide Complex CLR™ Madecassoside MultiMoist CLR™

$44.95~~$44.95~~ Save 0%

5.0

Rated 5.0 out of 5 stars

Heads up – I'm a refill! Swap out the empty insert from your Glass Mask with this refill to keep using the same hydrating mask you know and love. It's that easy.

Soothing

Hydrating

Protecting

Detoxifying

Free AUS Shipping Over $150

MultiMoist CLR™ puts intense hydration at your fingertips.
Madecassoside soothes redness and inflammation.
Ceramide Complex CLR™ enhances barrier function to produce the highly coveted glass effect.

Glass skin is just a moisture mask away. Whether you drench your complexion for 20-minutes or overnight, our MultiMoist CLR™ glass mask puts intense hydration at your fingertips. The key to locking in moisture is our powerful blend of actives that form a protective barrier against impurities. Madecassoside is our secret weapon in the fight against redness and inflammation. Hyaluronic acid and a potent humectant work overtime to bind moisture to your skin, while Ceramide Complex CLR™ enhances barrier function to produce the highly coveted glass effect. Indulge in this radiant ritual once or twice a week and bask in the undeniable glow that comes from plump, hydrated skin.

30ml / 1fl oz / Refill.

Unscrew the lid of your empty Glass Mask
Use the two tabs to pop out the empty pod and discard
Insert your new refill pod and take off the lid.
Screw the lid back on and you're set!
Apply as a mask to freshly cleansed skin once a week (for min. 20mins or leave overnight)
Rinse when finished and continue with your fave essence, serums and moisturiser.

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 Peptide Power Essence hydrating toner with Black Rice, Baobab Extract and Hyaluronic Acid product shot

TONE WITH

$49.95

PEPTIDE POWER ESSENCE

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

Unscrew the lid of your empty Glass Mask
Use the two tabs to pop out the empty pod and discard
Insert your new refill pod and take off the lid.
Screw the lid back on and you're set!
Apply as a mask to freshly cleansed skin once a week (for min. 20mins or leave overnight)
Rinse when finished and continue with your fave essence, serums and moisturiser.

Screen_Shot_2024-09-17_at_10.45.39_am.png

5.0

Rated 5.0 out of 5 stars

Based on 4 reviews

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

100%would recommend this product

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4 reviews

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BR
Brenda R.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
1 week ago
Best Skincare Ever
I started using all of the St Saj products from the day they were released. I cannot rave enough about the products. I’m almost 65 and I’ve never been more happy with my skin. I have never seen such a noticeable difference with anything else I’ve used. Highly recommend
Was this helpful?
MJ
Marica J.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
3 months ago
Easiest mask
Have been using for a year at least twice a week. I leave it on overnight and rinse off in the morning.
Beautiful soft and hydrated skin ✨
Was this helpful?
RR
Roxanne R.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
9 months ago
Glass Mask for Teens
The glass mask is amazing. On advice from Emmylou herself my 17 year old son used it every second night to repair his damaged skin from acne breakouts for 2 weeks and the change is incredible. I also love it for my skin, it is such a beautiful product. I leave it on overnight and my skin in the morning is lovely!
Was this helpful?
AH
Amy H.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
11 months ago
Glass mask refill
This is my 2nd time ordering this and absolutely love it! Has completely changed my skin for the better! Loving that there’s now refills
Was this helpful?

Australian Made

VEGAN & CRUELTY FREE

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.
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.
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.
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.
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.
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.

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GLASS MASK REFILL 30ml

Complete the Routine

How to Use

FAQs