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ST.SAJ Peptide Power Essence and Niaglow Clarity Boost laid flat with pink serum droplets on light background.

Woman laughing in pink sunglasses holding ST.SAJ product, text: why we love it, flawless filter effect, loaded peptide plumps & smooths, improves skin elasticity, prep step for your skin.

Woman holding Peptide Power Essence bottle, three-step guide: apply 1-2 pumps onto fingertips, massage onto face neck & décolletage, leave to absorb then follow with serums.

Close-up of cream texture, key ingredients labelled: Black Rice, Baobab Extract, Hyaluronic Acid, Acetyl Hexapeptide-8.

Two women holding ST.SAJ products, text: why we love it, helps to refine skin texture, minimise pores, calms & brightens, leaves skin silky smooth.

Red-haired woman applying product, two-step guide: massage 2-3 drops onto face neck and décolletage after cleansing and toning, layer with serums and lock in place with a moisturiser.

Pink serum droplets background, key ingredients labelled: 5% Niacinamide, Vitamin B12, CutiFine CLR™, Hyaluronic Acid.

Founder Emmylou in pink checkered outfit, quote: level up your skin game with our triple-threat formula of Peptide, Black Rice & Hyaluronic Acid.

PREP & GLOW DUO

Name: PREP & GLOW DUO
Brand: ST.SAJ
Price: 84.0 AUD
Availability: InStock

$84.00~~$104.90~~ Save 20%

4.8

Rated 4.8 out of 5 stars

The two products that make everything after them work harder. Peptide essence meets niacinamide serum, prep, calm, glow.

Free AU Shipping On Orders Over $150

PEPTIDE POWER ESSENCE 115ml

Reduce the appearance of pores and prime skin so every serum after it absorbs deeper and works harder.

NIAGLOW CLARITY BOOST 50ml

5% Niacinamide and Vitamin B12 calm redness, balance oil and minimise the appearance of pores.

The PREP & GLOW DUO pairs the two ST.SAJ products that sit between your cleanser and your moisturiser, the steps most routines skip, and the reason most routines underperform.

PEPTIDE POWER ESSENCE preps your skin so serums absorb deeper.

NIAGLOW CLARITY BOOST calms redness, balances oil and refines pores. Together, they're the foundation for calmer, clearer, more hydrated skin.

Apply after cleansing. Seal with SUPREME SKIN 7.

Please refer to the individual product page for specific ingredient list.

Complete the Routine

ST.SAJ Skin Refining Glaze 6% Mandelic Acid lightweight exfoliating milk product shot

REFINE WITH

$54.95

SKIN REFINING GLAZE

Quick Buy

ST.SAJ Starter Routine - Clear Cleanse, Peptide Power Essence and Supreme Skin 7 product flat lay

BUILD WITH

$135.00 ~~$169.85~~

STARTER ROUTINE

4.8

Rated 4.8 out of 5 stars

Based on 12 reviews

Total 5 star reviews: 10 Total 4 star reviews: 1 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0

92%would recommend this product

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12 reviews

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LM
Lauren M.
Verified Buyer
I recommend this product
Rated 4 out of 5 stars
3 weeks ago
Sensitive skin girly
I have very sensitive skin and am always cautious of new skin care, the flared up can be horrific. But with this so far so good, im really happy. And so is my skin.
Thank you
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RC
Rachel C.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
1 month ago
Skin feels fab!!!
Amazing products
Was this helpful?
TP
Tania P.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
1 month ago
The best my skin has EVER felt
Both my partner and I have been using the Clear Cleanse, Peptide, Hyaluronic Smoothing Complex, Niaglow Clarity and of course the supreme skin 7. I am about to order the glass mask as part of my next order :) I am obsessed and cant believe the difference in the way my skin looks but most importantly how good it feels.
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PK
Paula K.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
1 month ago
Beautiful products
Great value for money buying as a duo 🥰
Was this helpful?
EH
Ebony H.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
1 month ago
First time buying Peptide essence
I cannot explain how good this product is for the skin, I purchased the peptide essence as I was looking for a new toner and it’s safe to say this one is amazing! It’s smooths and hydrates / plumps my skin while helping my makeup to sit flawlessly on top of it.
The clarity glow has helped a lot with my pigmentation and reoccurring acne it is an amazing product!
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AUSTRALIAN MADE SKINCARE

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.
All ST.SAJ formulations are proudly made in Australia, right here in Melbourne.

Our products are developed, filled, and packed locally, and even our packaging boxes are Melbourne made. We prioritise working with trusted partners to ensure quality, consistency, and attention to detail at every stage.
A peptide is a short chain of amino acids, the building blocks of proteins such as collagen and elastin in the skin.

In skincare, peptides act as messengers. They signal the skin to support processes like firmness, elasticity, and repair. When applied topically, certain peptides can help improve the appearance of fine lines and strengthen the look of the skin over time.

Think of peptides as communication tools, encouraging the skin to function in a way that supports resilience, smoothness, and overall structure.
It's a lightweight, hydrating product that sits between your cleanser and serums. The name comes from the old "toning" step (like a toner), but essences are way more hydrating and active-packed than traditional toners.
Essences are mostly water with hydrating ingredients, peptides, botanical extracts, and humectants. They're thin enough to absorb instantly but potent enough to actually do something. Think of it as a serum's lighter, more hydrating cousin.
In your routine, it's the bridge between cleansing and treatment. It rehydrates your skin after you've stripped it with cleanser, rebalances pH, and preps your skin to absorb the heavier serums and creams that come next. It's the step that makes everything else work better.
That's Vitamin B12 (cyanocobalamin). We included it because it supports skin health and clarity and yes, it happens to give Niaglow that gorgeous pink hue.
The color is a visual reminder of what's actually in the bottle. You're not paying for packaging magic; you're getting a real active ingredient that delivers real results. Plus, it's kind of cool to see what you're putting on your skin.
Store it away from direct sunlight to keep it at its best.
CutiFine CLR™ is a proprietary botanical complex made from cowherb and baobab extracts. It refines skin texture and reduces the appearance of pores, not just by making pores smaller, but by reducing the colour contrast between pores and surrounding skin, which is what actually makes them look conspicuous.
We included it in both Peptide Power Essence and Niaglow Clarity Boost because it addresses pore enlargement at a biological level while simultaneously smoothing and refining. It's a multi-tasking ingredient that does serious work.

It strengthens your skin barrier, reduces inflammation, minimises pores, and helps with breakouts. It's one of the most researched, proven skincare ingredients out there.
In Niaglow Clarity Boost, we use 5% niacinamide specifically to clarify congested skin while keeping your barrier intact. It works without stripping or irritating, which is kind of the whole ST.SAJ vibe.
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.
The clever people at Chemist Warehouse know a good thing when they try it. That's why we're thrilled to announce our partnership with the home of Australian skincare. Head down to Chemist Warehouse in South Wharf DFO (Melbourne), where you can touch, smell, try and buy the entire ST.SAJ range for yourself. Or shop online here or at Chemist Warehouse now!
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.

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PREP & GLOW DUO

PEPTIDE POWER ESSENCE 115ml

NIAGLOW CLARITY BOOST 50ml

Complete the Routine

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