My redness calmed
“My reactive, red-prone skin has never been this calm. The jelly sinks right in.”
COMPLIMENTARY SHIPPING ON ORDERS OVER €6030-DAY RETURNS — NO QUESTIONS ASKEDVEGAN & NATURALLY CERTIFIED FORMULAS
PREBIOTIC SERUM30 ML / 1.01 FL OZ
PREBIOTIC JELLY SERUM · BALANCE & MICROBIOME
MOSSA Prebiotic Jelly Serum
A fresh jelly-textured serum that strengthens the skin barrier through prebiotics — Lactobacillus ferment, hyaluronic acid and sodium PCA. For all skin types, especially sensitive, reactive or compromised barriers. Dermatologically tested.
€52,00
- Strengthens the skin barrier with prebiotics
- Supports the microbiome — skin's natural shield
- Soothes reactive skin, reduces discomfort
- Ultra-light jelly · sinks in, never sticky
LOW STOCK · SELLING FAST
◆ 30-DAY MONEY-BACK GUARANTEE
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30-day refundOpened or unopened
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Free EU shippingOrders over €60
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Ships within 24hFrom Reykjavík
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Carbon-neutralEvery parcel
Ships within 24h from Reykjavík · Carbon-neutral parcel
It has quietly become the part of my day I look forward to. My skin feels calmer, softer — never stripped.
- Secure checkout
- 30-day returns
- Made in Iceland
How to use
Apply morning and evening to clean skin. Warm a small amount between your fingertips and press gently over the face and neck, then follow with your moisturiser.
Ingredients
Clean, fragrance-considered formulas — vegan, cruelty-free, and free from sulphates and parabens. See the full ingredient breakdown in the Ingredients section above.
Shipping & returns
Carbon-neutral shipping from Reykjavík, dispatched within 24h. Free EU delivery on orders over €60. 30-day money-back guarantee — opened or unopened.
€97,00€136,00
SAVE €39,00
41,000+
Rituals shipped
4.9 / 5
Average review
97%
Would recommend
65° N
Sourced in Iceland
Clinical
Not just hydration — a stronger barrier.
Your skin hosts a microbiome — billions of good bacteria that keep it strong and calm. Prebiotics feed them. In a 4-week consumer use-test, users found skin calmer, more even and more resilient over time.
CONSUMER USE-TEST · 4 WEEKS · SELF-ASSESSED
found skin felt calmer and more comfortable.
saw a more even, luminous complexion.
reported skin felt more resilient over time.
Barrier
Real results
Results you'll see with your own eyes
Stronger barrier
“Finally a serum that strengthens my barrier instead of stripping it. Skin looks even.”
Fewer flare-ups
“Prebiotics made the difference — fewer flare-ups and calmer skin within weeks.”
Barrier feels stronger
“Way fewer reactions to new products. My skin can finally cope.”
Composition
Life returning to the lava, bottled.
One of the most studied prebiotics in skincare. Feeds the good bacteria of the microbiome, strengthens the barrier and visibly improves resilience.
In two forms — hydrolyzed and sodium hyaluronate — to act at the surface and deep down. Plumps, smooths and saturates skin with moisture.
Naturally present in skin, it retains water and maintains comfort — ideal for dehydrated, fragile skin.
Natural actives that give the signature fresh jelly feel and form a protective veil that helps retain hydration.
The signature scent — a woody, soothing note between green freshness and natural depth.
Method
How to use it
01
Start clean
Apply to cleansed, toned skin.
GEYSIR Glow Cleanser →02
Press 3–4 drops
Warm 3–4 drops and press over face, neck and décolleté — no rubbing.
03
Seal it in
Follow with your day or night cream.
BASALT Clarifying Cream →Targeted
Restore balance to sensitive, reactive skin.
- Sensitivity
- Compromised Barrier
- Redness
- Dehydration
- Dullness
Make it a ritual
- Cool and groundingFeel the fresh jelly melt in, green and woody, like moss on cooled lava.
- Quiet repairTrust the slow work — balance returning to your skin, day after day.
- Morning and nightA small ritual that protects by day and restores while you sleep.
Why we built it
Long-term resilience, not just a quick fix.
MOSSA
Ordinary hydrating serums
Approach
Prebiotics strengthen the skin's own microbiome.
Surface hydration that does nothing for balance.
On sensitive skin
Made to restore compromised, reactive barriers.
Harsh actives that worsen reactivity.
Over time
Lasting resilience, calmer and more even skin.
A quick fix that fades by the next wash.
Texture
Fresh jelly — sinks in, never sticky.
Tacky films that pill under cream.
Guarantee
30-day refund — opened or unopened.
Final sale. No recourse.
Composition
Every line on the label, accounted for.
We name our sources and we name the dose. What's on the bottle is exactly what's in it.
Sodium PCA
Hydration
Retains water, maintains comfort.
Lactobacillus Ferment Lysate
Prebiotic
Feeds the microbiome, strengthens the barrier.
Cellulose Gum / Alginate
Texture
Signature jelly feel, protective veil.
Hyaluronic Acid (×2 forms)
Hydration
Surface and deep plumping.
Pogostemon Cablin Oil
Patchouli
Soothing, woody signature note.
Questions
The quiet ones, answered.
What makes it different from a classic hydrating serum?
Unlike classic serums, MOSSA is enriched with prebiotics that actively support the skin microbiome. It doesn't just hydrate — it strengthens the skin's balance and resilience over the long term.
Should I use it morning or night?
Both. In the morning it helps protect skin from daily stress; at night it supports the skin's repair and regeneration.
Can I use it around the eyes?
Yes, the formula is gentle enough for the eye contour. Simply avoid direct contact with the eye.
Is it suitable for sensitive or reactive skin?
Especially. Restoring balance to compromised, sensitive or reactive barriers is one of its main purposes.
What exactly is a prebiotic?
A prebiotic is a nutrient that feeds the good bacteria already on your skin. Unlike probiotics (which add new bacteria), prebiotics strengthen the beneficial ones that make up your natural microbiome.
Still wondering? Our care team replies within a day.
Verified reviews
4.9 / 5
791 verified buyers
✓ VERIFIED BUYER
“My reactive, red-prone skin has never been this calm. The jelly texture is so fresh and sinks straight in.”
Juliette M.
NANTES
MOSSA
✓ VERIFIED BUYER
“Finally a serum that strengthens my barrier instead of stripping it. Skin looks even and resilient.”
Elin S.
STOCKHOLM
MOSSA
✓ VERIFIED BUYER
“Light, fresh, no stickiness under my moisturiser. The green woody scent is lovely.”
Théa R.
PARIS
MOSSA
✓ VERIFIED BUYER
“Prebiotics made the difference — fewer flare-ups, calmer skin within weeks.”
Nora K.
COPENHAGEN
MOSSA
From the atelier
Distilled cold at 65° North.
Three products, not twelve. Cold-processed at our Reykjavík atelier, never above 38°C, so the mineral and botanical compounds remain intact.
Each batch is small enough that the founders sign every label.
— SIGNED BY THE FOUNDERS, REYKJAVÍK
Begin
Balance, restored, begins here.
Like moss regenerates lava, MOSSA regenerates the skin's microbiome — calmer, more even, more resilient skin, with a 30-day refund.
- 30-DAY REFUND
- FREE EU SHIPPING
- CARBON-NEUTRAL
- SIGNED BY FOUNDERS
MOSSA Prebiotic Jelly Serum
€52,00