What are Exosomes?

Exosomes are nature's original messenger system. These incredibly tiny biological particles - naturally produced by cells throughout the body - carry signals between cells, telling them to repair, renew, and protect. Think of them as your skin's own internal communication network, delivering instructions that switch on the processes your skin needs most: collagen production, renewal, inflammation reduction, and repair.

In skincare, exosomes work differently from every other active ingredient you've ever used. Where hyaluronic acid adds hydration, retinol speeds up cell turnover, or vitamin C brightens melanin - exosomes don't just act on skin. They communicate with it. They tell your skin cells what to do, triggering your skin's own biological renewal processes from within.

At 300 times smaller than a pore, INKEY's plant-derived exosomes penetrate skin deeply without any needles or clinic visits - making next-generation skin renewal accessible to everyone.

The Science Behind Exosomes

The biological intelligence of exosomes lies in their ability to deliver what are called "bioactive signals" - essentially, biological instructions - directly to cells. In skincare, this means your skin isn't just receiving an active ingredient. It's receiving a message. A message that says: renew, repair, produce more collagen, reduce inflammation, and glow.

INKEY's exosomes are plant-derived from Cica (Centella Asiatica) extract - a clinically studied botanical with a centuries-long heritage in skincare. In vitro testing shows that Cica Exosomes increase genes related to collagen production by approximately 300%, decrease inflammation by 55%, and increase skin repair and renewal by 63% in just 8 hours.*** That's not topical chemistry. That's cellular biology.

Types of Exosomes in Skincare

Not all exosomes are the same. Here's what you need to know:

INKEY chose plant-derived Cica Exosomes for three reasons: they're clinically validated, they're biocompatible with all skin types, and they're 100% vegan - delivering the benefits of exosome technology in a responsible, accessible formula.

Skin Renewal & Rejuvenation

Exosomes work at the most fundamental level of skincare - the cell. By delivering biological signals that trigger skin's own renewal processes, they don't mask the signs of tired or ageing skin. They address the root cause. In vitro testing of INKEY's Cica Exosomes shows a 63% increase in markers associated with skin renewal after just 8 hours.*** Over a 4-week clinical study, 100% of users saw more glowing skin* - and the results continued to compound with consistent use.

The result? Skin that looks and behaves younger: smoother texture, a more even tone, improved bounce, and that hard-to-fake quality of genuinely healthy, renewed skin.

Reduces Visible Signs of Skin Stress

Modern skin is stressed. Pollution, blue light, lack of sleep, travel, hormonal shifts - daily life takes a visible toll. Redness, puffiness, dullness, irritation - these are all signs of skin stress, and exosomes are uniquely equipped to address them.

In vitro testing shows INKEY's Cica Exosomes reduce pro-inflammatory markers by 55%.*** In practice, that translates to visibly calmer, less red, less reactive skin. Perfect for post-travel skin revival, post-workout recovery, or simply a complexion that's been pushed to its limits.

Intense, Long-Lasting Hydration

Exosomes don't just hydrate skin - they activate skin's own moisture intelligence. Paired with 1% Hyaluronic Acid and 1% Ectoin in the Exosome Glow Serum formula, the hydration is multi-level and long-lasting: clinically proven to deliver up to 12 hours of hydration.** This isn't surface-level dewiness. It's deep, lasting plumpness that makes skin look and feel consistently healthier.

The difference between exosome hydration and traditional hydration is intent. HA fills the tank with water. Exosomes tell the skin how to hold onto it.

Collagen Boosting & Visible Firming

One of the most significant effects of exosomes on skin is their impact on collagen. In vitro testing shows Cica Exosomes increase the genes related to collagen production by approximately 300%.*** Combined with 1% Kollaren™ peptide in the Exosome Glow Serum formula - which helps visibly improve firmness and skin structure - the result is a clinically proven 6-in-1 improvement in radiance, hydration, tone, firmness, elasticity, and texture.* Anti-ageing results, without the irritation of traditional actives.

Suitable for All Skin Types

Unlike many potent actives, exosomes come with zero irritation and no adjustment period. They're biocompatible, fragrance-free, alcohol-free, and paraben-free. Here's how they work across every skin type:

Exosomes are at their most powerful when they're the first thing skin receives after cleansing. Because they work at a cellular level to prepare and prime skin, applying them before your other serums means everything that follows - your actives, your moisturiser - is absorbed into skin that's already in renewal mode.

The key rule: apply to damp skin. This is especially important with the Exosome Glow Serum - applying to slightly damp skin locks in hydration and maximises the absorption of the formula's hydrating complex.

Step-by-Step Application Guide

Morning Routine:

1. Cleanse with your preferred cleanser
2. Apply Exosome Glow Serum - smooth a pea-sized amount onto face and neck while skin is still damp (Step 2 — always first, before other serums)
3. Layer targeted treatments (Vitamin C, Niacinamide, etc.)
4. Apply moisturiser to seal in benefits
5. Finish with SPF 30+

Evening Routine:

1. Double cleanse to remove SPF and makeup
2. (Weekly or whenever skin needs a boost) Apply Exosome Boosting Dry Sheet Mask for 10 minutes — see application guide below
3. Apply Exosome Glow Serum after removing the mask
4. Layer active treatments (Retinol, AHAs/BHAs)
5. Seal with night moisturiser

How to Apply the Exosome Boosting Dry Sheet Mask:

1. After cleansing, wet skin thoroughly with water or a face mist - moisture droplets should be visible on the skin
2. Apply the face mask sheet
3. After 3 minutes, re-moisten the mask with a wet cotton pad or mist
4. After 10 minutes total, remove and massage in the excess

INKEY Tip: For the ultimate glass-skin boost, use the Exosome Boosting Dry Sheet Mask before applying the Exosome Glow Serum - the mask primes and energises skin so the serum works even harder. On the go? Spray skin generously with a hydrating face mist before applying the mask for a travel-friendly glow boost.

Morning vs Evening Use

How Much to Use

Exosome Glow Serum: A pea-sized amount is all you need for the full face and neck. Smooth on - don't rub. Less is more; the formula is concentrated and a little goes a long way.

Exosomes vs Hyaluronic Acid

Hyaluronic acid is a humectant - it draws moisture to the skin and holds it there, delivering that immediate plumping, dewy effect we all love. Exosomes work at a fundamentally different level. Rather than adding hydration to skin, they activate skin's own cellular processes - including its ability to manage moisture, produce collagen, and renew itself.

Think of it this way: HA fills the bucket with water. Exosomes teach the bucket to fill itself.

The best news? They work brilliantly together. INKEY's Exosome Glow Serum already contains 1% Hyaluronic Acid alongside the Cica Exosome complex - so you get both immediate plumping hydration and deep cellular renewal in one formula.

Exosomes vs Retinol

Retinol is the gold-standard anti-ageing active - it accelerates cell turnover via the retinoic acid pathway, reducing fine lines, improving texture, and boosting collagen production. But it comes with a well-known trade-off: irritation, sensitivity, and a purging phase, especially for beginners or sensitive skin types.

Exosomes achieve some of the same outcomes - collagen stimulation, skin renewal, improved firmness - through an entirely different mechanism. They signal cells to behave optimally, rather than forcing accelerated turnover. Zero irritation, no adjustment phase, suitable for everyone from day one.

Even better: used together, exosomes boost retinol's results while simultaneously calming the irritation retinol can cause. It's one of the most powerful pairings in modern skincare.

Comparison Table

Can You Use Exosomes With Other Actives?

Exosomes are one of the most compatible ingredients in skincare - no conflicts, no restrictions. Here's how to layer:

• With Retinol  — Apply Exosome Glow Serum first (Step 2), then Retinol. Exosomes prime skin and help buffer retinol irritation whilst amplifying its renewal effects.
• With Vitamin C  — A powerhouse brightening duo. Exosomes for cellular renewal, Vitamin C for antioxidant protection and radiance.
• With Niacinamide  — Pore-refining and skin stress-relief. Apply exosome serum first, then niacinamide.
• With AHAs/BHAs  — Exosome serum goes on first after cleansing; follow with acids. The cellular renewal effects of exosomes complement the surface exfoliation of acids beautifully.
• With Hyaluronic Acid  — Already included in the Exosome Glow Serum. If you want extra hydration, layer your Hyaluronic Acid Serum after in the AM for maximum plumpness.

Exosome Glow Serum - (£20 | 30ml)

Our Hero Exosome product

Your facial-in-a-bottle. A hydrating glow serum powered by 3 million plant-derived exosomes that visibly brightens, smooths, and renews skin in 14 days - no clinic required. Clinically proven to visibly improve 6 skin metrics simultaneously, this is the most advanced formula INKEY has ever made, at a price that has no right to be this good.

What makes it special:

• 1% Plant-derived Cica Exosomes: Targets skin at a cellular level to reduce visible signs of skin stress by 55% and increase skin renewal activity by 63% in 8 hours***
• 1% Hyaluronic Acid: Multi-molecular hydration for instantly plumper, more supple skin
• 1% Ectoin: Barrier-strengthening molecule that locks in moisture for up to 12 hours**
• 1% Kollaren™: Clinically studied peptide that helps visibly improve firmness and skin structure
• Prickly Pear Extract: Gently resurfaces for a smoother, more radiant glow
• Q10 (Ubiquinone): Antioxidant protection to defend against daily environmental stressors

Clinically Proven Claims:

• 100% saw more glowing skin - clinically proven*
• 6-in-1 skin rejuvenation: visibly improves radiance, hydration, tone, firmness, elasticity and texture*
• 55% reduction in visible signs of skin stress (redness, puffiness, irritation)***
• 63% increase in skin renewal activity in 8 hours***
• Up to 12 hours hydration**

*4-week clinical study of 26 people. **Clinical study of 31 people. ***In-vitro testing of Cica Exosomes.

Suitable for: 

All skin types · Sensitive skin · Pregnancy & breastfeeding

Targets: 

Dullness · Texture · Rejuvenation · Dehydration

How to use: 

Apply a pea-sized amount to damp skin AM and PM, straight after cleansing. Follow with treatments → moisturiser → SPF (AM).

How it feels: 

Creamy. Lightweight. Zero stickiness. Layers perfectly under skincare or makeup.

Customer tips:

• Apply under makeup for an all-day dewy glow
• Use post-workout or post-travel to revive stressed skin instantly
• Pair with Bio-Active Ceramide Moisturiser for the ultimate firming + hydration duo
• A pea-sized amount is genuinely enough - this is concentrated

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Exosome Boosting Dry Sheet Masks - Pack of 3 (£20 | 3 masks)

The 10-minute skin reset your routine has been waiting for. These next-generation biodegradable dry sheet masks are powered by OXYGESKIN® technology to boost your skin's own exosome activity - delivering smoother, more radiant, glass-skin results that you can see and feel instantly. Exclusive to theinkeylist.com.

An important distinction: this mask doesn't contain exosomes. Instead, it contains OXYGESKIN® — an active that helps your skin's own natural exosomes work more efficiently, boosting cellular oxygen flow, energy, and renewal. Think of the serum as the daily cellular renewal system, and the mask as the weekly performance amplifier.

What makes it special:

• SILAFILM® Smart Delivery: An ultra-thin, biodegradable dry film that activates with water and fits your face like a second skin — delivering ingredients up to 2.5x more effectively than traditional sheet or hydrogel masks
• OXYGESKIN®: A flower-powered active that boosts oxygen flow and cell energy, restoring healthy skin communication so your skin can bounce back from stress faster
• p-REFINYL®: Visibly smoothes and refines skin texture

Results from the Lab:

• +23% instant hydration / +20% after 6 hours
• +21% radiance / +85% luminosity after one use
• -11% in the look of lines instantly / -13% after 6 hours
• 95% said their skin felt instantly softer

*Test conducted on 20 volunteers.

When to use: 

Whenever your skin needs a fast, 10-minute high-performance boost — before a big event, post-travel, post-flight, or anytime dullness hits.

INKEY Tip: Use the Exosome Glow Serum before applying this mask, and Bio-Active Ceramide Moisturiser after, for a full glass-skin system.

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Source Matters - Not All Exosomes Are Equal

The exosome skincare category is growing fast, and not every product lives up to its claims. The single most important factor when choosing an exosome product is the source of the exosomes themselves.

INKEY uses 1% Cica Exosomes - plant-derived from Centella Asiatica, clinically tested, and backed by in vitro data. That's the standard to look for.

Concentration & Smart Delivery

Look for a minimum of 1% active exosome complex in any formula claiming exosome benefits. But concentration alone isn't enough - delivery technology matters enormously.

Exosomes are approximately 300 times smaller than a pore, which means they're capable of deep penetration into the skin without assistance. But the surrounding formula needs to support this: lightweight texture, no heavy occlusives that block penetration, and supporting ingredients that work synergistically with the exosome complex.

In the Exosome Glow Serum, the exosome complex is supported by Ectoin (barrier support and moisture retention), Hyaluronic Acid (multi-level hydration), Kollaren™ (firmness and structure), and Prickly Pear Extract (radiance resurfacing) - all working together to amplify the cellular renewal signal.

Serum vs Mask - Which Format Do You Need?

For most people, the serum is the essential daily step. The mask is the booster - the treatment you reach for when skin needs a fast, visible reset. Together, they create the complete INKEY Exosome system.

What to Avoid

• Unverified claims: Look for published in vitro or clinical data to back up exosome benefits - not just marketing language
• High-fragrance formulas: Exosomes work at a cellular level; fragrance can trigger inflammation that counteracts the anti-stress benefits
• Heavy, occlusive-first formulas: These can prevent the deep penetration that makes exosomes so effective

Are Exosomes Safe?

Yes. INKEY's plant-derived Cica Exosomes are biocompatible, non-invasive, and clinically tested. The Exosome Glow Serum is:

• Fragrance-free
• Alcohol-free
• Paraben-free
• Dermatologically tested
• Clinically tested
• Suitable for all skin types, including sensitive skin
• Safe for use during pregnancy and breastfeeding
• Vegan - certified by The Vegan Society
• B Corp certified

Unlike clinical exosome treatments (which involve injectable or microneedling-assisted delivery), topical plant-derived exosomes carry none of the associated risks of invasive procedures. There are no known conflicts with standard skincare actives.

Potential Side Effects

Plant-derived topical exosomes are well-tolerated by the vast majority of skin types. As with any new skincare product, we always recommend patch testing before full application:

• Rare breakouts: The Exosome Glow Serum is non-comedogenic, but individual skin responses vary - always patch test when introducing new products
• Very sensitive or compromised barriers: Introduce gradually and ensure you're supporting skin with a barrier-repairing moisturiser

Who Should Seek Medical Advice First?

• Those currently using prescription topical medication (particularly Roaccutane or prescription retinoids) - always check with your doctor before introducing new actives
• If you're undergoing microneedling or other professional skin treatments - discuss product use timing with your aesthetician

When in doubt: Patch test on the inside of your wrist or behind your ear for 24 hours before first use. Our askINKEY advisors are always available to help if you have questions about your specific skin situation.

Application Technique

• Always apply to damp skin - this is the single most important tip. Apply immediately after cleansing, before skin fully dries. The residual moisture helps the hydrating complex bind and absorb optimally.
• Smooth and press, don't rub - gentle smoothing motions across the face and neck, followed by light pressing to encourage absorption
• A pea-sized amount covers everything - face and neck, AM and PM. Don't be tempted to use more; the formula is concentrated
• Apply before all other serums - exosomes set the cellular stage. Everything that follows is absorbed into skin that's already in renewal mode

Common Mistakes to Avoid

• Applying after heavier serums - exosome serum must be Step 2, directly after cleansing. Putting it on after other serums significantly reduces its effectiveness
• Skipping moisturiser afterwards - the Exosome Glow Serum is a serum, not a moisturiser. Always seal with moisturiser to lock in the renewal work
• Expecting overnight results - you will see a glow after day one, but the full clinical results build over 14 days. Consistent daily use is key
• Applying to bone-dry skin - always on damp skin. Especially important for this formula given its hydration-locking complex

Climate & Lifestyle Considerations

• Dry climates / heated interiors: Mist face before applying to ensure skin is damp enough; always follow with moisturiser
• Humid environments: Exosomes work particularly well - the hydration complex can draw environmental moisture into skin
• Post-travel / post-flight: This is when your Exosome Boosting Dry Sheet Mask earns its keep. Use it immediately on landing, follow with the serum for instant skin revival
• Pre-event skin prep: Sheet mask 10 minutes before makeup for glass-skin results that photograph beautifully

How Long Until You See Results?

At The INKEY List, we believe in skincare that earns its claims. No hype, no buzzwords - just real science, published data, and formulas that do exactly what they say.

INKEY's Cica Exosome Complex

3 million plant-derived exosomes in every bottle. Sourced from Centella Asiatica (Cica) - a botanical with decades of clinical research behind it - INKEY's exosomes are validated by in vitro testing that shows genuinely remarkable cellular-level activity:

• ~300% increase in genes related to collagen production***
• 55% reduction in pro-inflammatory markers***
• 63% increase in markers associated with skin renewal in 8 hours***

These aren't cosmetic marketing claims. This is biology.

The Full Formula - Why Every Ingredient Earns Its Place

The Clinical Proof

• 4-week clinical study of 26 people: 100% saw more glowing skin.* 6-in-1 clinically proven improvement in radiance, hydration, tone, firmness, elasticity, and texture.*
• Clinical study of 31 people: Up to 12 hours of hydration.**
• In vitro testing: 55% reduction in pro-inflammatory markers. 63% increase in skin renewal markers in 8 hours.***

*4-week clinical study of 26 people. **Clinical study of 31 people. ***In-vitro testing of Cica Exosomes showing a 55% reduction in pro-inflammatory markers and a 63% increase in markers associated with skin renewal after 8 hours.

Why INKEY

B Corp certified. Carbon Net-Zero. 100% recyclable packaging. Cruelty-free (Leaping Bunny approved). Certified vegan. Dermatologically and clinically tested. Fragrance-free, alcohol-free, paraben-free.

Skincare that's serious about results. And serious about how it gets them.

Morning Exosome Routine

1. Gentle cleanser - prepares skin for maximum absorption
2. Exosome Glow Serum ← core daily step - apply to damp skin
3. Additional serums (Vitamin C, Niacinamide - layer thinnest to thickest)
4. Moisturiser - seal in renewal and hydration
5. SPF 30+ - protect your investment

Evening Exosome Routine

1. Double cleanse - remove SPF and makeup thoroughly
2. (Weekly or as needed) Exosome Boosting Dry Sheet Mask - 10 minutes for instant glass-skin boost
3. Exosome Glow Serum - apply after mask on damp skin
4. Active treatments - Retinol, AHAs/BHAs if using
5. Rich night moisturiser - lock in overnight renewal

Product Combinations That Work

Exosomes aren't a skincare trend. They're the next chapter of skincare science - and INKEY has made them accessible to everyone.

3 million plant-derived exosomes per bottle. Clinically proven to visibly improve 6 skin metrics in 14 days. Featured in Vogue, The Independent, Sheerluxe, Glamour, and Marie Claire. Rated 4.5 stars by nearly 1,000 customers. And it costs £20.

You don't need a clinic. You don't need a needle. You just need to know what your skin is capable of - and give it the cellular intelligence to get there.

Start with the Exosome Glow Serum. Add the Exosome Boosting Dry Sheet Masks when your skin needs a 10-minute reset. And discover what happens when skincare stops being something you put on your face, and starts being something that changes it.

Shop Exosome Serum now