What are Exosomes?

Exosomes are microscopic particles that occur naturally in living things. In nature, their role is to carry information between cells, and they have been studied in biology for decades, long before anyone thought to put them in a serum. In exosomes skincare, plant-derived exosomes are applied topically to support your skin’s natural processes so it looks fresher, calmer and more radiant.

That is genuinely all the definition you need. Everything else is detail, and most of the confusion around exosomes exists because brands have wrapped a fairly simple idea in language borrowed from a biology textbook. We would rather just tell you what they are and what you will see.

The Science Behind Exosomes

Here is the useful way to think about it. Exosomes are naturally occurring particles, and when they are formulated into a serum and applied to your skin, they support the natural processes your skin already performs every day, the ones that keep it looking bright, even and comfortable.

What matters for you is what shows up on the surface. Skin looks smoother and more refined. Dull-looking skin looks revitalised. Skin looks better able to cope with the daily stress of weather, screens, late nights and central heating. And this ingredient helps support natural collagen production, which is the quality your skin relies on for firmness and bounce.

Scale is the other thing worth knowing, and it is the reason exosomes work as an at-home product at all. Exosomes are far smaller than a pore. Very small indeed. That size is exactly why they suit a lightweight serum format that you can apply yourself at a bathroom sink, rather than something that has to be administered by a professional. Size is not a marketing detail here. It is the practical reason this ingredient made the jump from the clinic to your shelf.

One more honest note. Exosomes are not a miracle, and anyone telling you otherwise is selling rather than explaining. They are a well-tested, well-tolerated ingredient that produces visible results over a sensible timeframe. That is a good thing to be.

Types of Exosomes in Skincare

Not all exosomes are the same, and the difference comes down to where they are sourced from. If you only remember one thing from this page when you are comparing products, make it this. There are three main types you will encounter, including the plant derived exosomes that have become the standard for at-home formulas.

We use plant-derived cica exosomes in the Exosome Glow Serum (£20), and the reasoning is straightforward. Cica exosomes are derived from centella asiatica, a plant with a long and well-earned reputation in skincare for looking after skin that gets easily upset. Plant sourcing means the formula is vegan. It also means it is well suited to an everyday, at-home product rather than something reserved for a treatment room. You get the ingredient, at home, at a price that makes daily use realistic.

Now that you know what they are and where they come from, the more interesting question is what they actually do once they are on your face.

The reason people search for exosomes for skin rather than for the science is simple: they want to know what changes. So let us be specific about that, because vague promises are how this category got confusing in the first place. Below are the four things our clinical and in-vitro testing supports, plus an honest look at who this suits.

Skin Renewal and Rejuvenation

Your skin renews itself constantly. That process is what keeps your complexion looking fresh rather than flat, and it is the process that slows down when you are tired, stressed, cold, or simply getting older.

In-vitro testing showed a 63% increase in skin renewal activity in 8 hours**. That is the engine behind the headline result: 6-in-1 skin rejuvenation: clinically proven to visibly improve radiance, hydration, tone, firmness, elasticity, and texture.

Six improvements from one step, measured in a single four-week study. Most serums target one of those and shout about it, so seeing visible improvement across radiance, hydration, tone, firmness, elasticity and texture together is what makes this ingredient worth the attention it is getting.

Reduces Visible Signs of Skin Stress

Stressed skin has a look. You know it when you see it in the mirror at 8am: patchy redness across the cheeks, a slightly puffy under-eye, an all-over blotchiness that makeup sits badly on. It is one of the most common complaints we hear, and it is often the thing people most want to fix before anything else.

In-vitro testing showed a 55% reduction in visible signs of skin stress (redness, puffiness, visible irritation)*.

In practice, that means skin that looks calmer. Less visible redness. Less puffiness in the morning. A face that looks like it slept, even on the days it did not. Cica has been the go-to plant for easily upset skin for years, and cica exosomes bring that heritage into a modern format.

This is also why exosomes appeal to people who have tried stronger actives and found them a step too far. You can pursue visible rejuvenation without the trade-off of a red, stinging face for the first three weeks.

Intense, Long-Lasting Hydration

Hydration is the benefit you will notice first, on day one, within minutes.

The Exosome Glow Serum is proven to deliver up to 12-hours of hydration**. A full working day. Not a hit of moisture that has evaporated by your second coffee, but comfort that holds from morning through to evening.

What that looks like in practice: skin that looks plumper, with fine lines that look softer because they are sitting on well-hydrated skin rather than parched skin. Makeup that goes on smoothly instead of clinging to dry patches. Skin that feels comfortable at 6pm rather than tight and papery.

It is worth knowing that dehydrated skin is not the same as dry skin, and a lot of people are treating the wrong one. Dry skin lacks oil and is a skin type. Dehydrated skin lacks water and is a temporary condition that anyone can get, including people with oily, congested skin. If your face is shiny by lunchtime but still feels tight, dehydration is very likely your actual concern.

If your barrier feels genuinely compromised, meaning stinging, flaking or reacting to products it never used to, pair your exosomes with something focused on barrier support such as the Ectoin HydroBarrier Serum (£15). The two work well together, and looking after your barrier makes everything else in your routine perform better.

Glow Boosting and Visible Firming

Glow is the benefit people ask for most and define least. What they usually mean is skin that looks alive: even, luminous, healthy, with a bit of bounce to it.

In a 4-week clinical study, 100% saw more glowing skin, clinically proven*. Every single participant. That is a result we are genuinely proud of, because unanimous outcomes in clinical testing are rare.

Alongside that glow, the formula helps support natural collagen production, which is the quality that keeps skin looking firm and resilient rather than tired. Combined with the visible improvements to firmness and elasticity in the 6-in-1 result, that is why people report their skin looking lifted and fresher after a fortnight of consistent use.

Suitable for All Skin Types

One of the most practical things about exosomes is how broadly they suit people. Here is an honest breakdown by skin type:

*4-week clinical study of 26 people

**Clinical study of 31 people

*In-vitro testing of Cica Exosomes showed a 55% reduction in pro-inflammatory markers and a 63% increase in markers associated with skin renewal after 8 hours.

Knowing why is only half the job. Getting the results depends almost entirely on how you use it.

An excellent serum applied badly is an average serum. Exosomes are simple to use, but there are a few details that make a real difference to what you see, and a few comparison questions worth settling before you buy.

Your AM Exosome Routine

1. Cleanse. Start with clean skin, and do not towel it completely dry 
2. Apply Exosome Glow Serum (£20) to damp skin. Damp is the important word. Press it in 
3. Moisturise. Seal everything in with your usual moisturiser 
4. SPF 30 or higher. Every single morning, whatever the weather. Try the Dewy Sunscreen SPF 30 (£15) if you want glow rather than a matte finish 

Your PM Exosome Routine

1. Cleanse. Remove makeup, SPF and the day 
2. Apply Exosome Glow Serum (£20) to damp skin. Same technique, press and pat 
3. Moisturise. A slightly richer formula in the evening if your skin likes it 
4. Add targeted treatments as needed.Exosomes layer happily with most other PM actives 

Morning vs Evening

How Much to Use

Three to four drops is right for the whole face. More is not better, it is just faster to run out.

Apply to damp skin, because damp skin helps the formula spread evenly and stops it dragging. Then press and pat rather than rubbing. Rubbing a serum around your face wastes product on your fingertips and tugs at skin unnecessarily. Press it in, give it fifteen seconds, then move on to moisturiser.

How to Do an Exosome Facial at Home

An exosome facial in a clinic is a lovely thing and a significant expense. The at-home version is the Exosome Boosting Dry Sheet Masks, £20 for a pack of three (worth £24), and it takes ten minutes.

1. Cleanse and leave your skin properly damp.These are dry masks, so they are activated by the water on your face. Do not skip this 
2. Apply your Exosome Glow Serum first. This is the step most people miss, and it is the one that makes the whole thing work 
3. Unfold the mask and press it onto damp skin,smoothing from the centre of your face outwards so there are no air pockets 
4. After 3 minutes, re-moisten the mask with a wet cotton pad or a mist. This keeps it working for the full ten 
5. Remove at 10 minutes and massage in whatever remains. No rinsing 
6. Follow with moisturiser to seal it all in 

That is your at-home glow treatment, for the price of a sandwich rather than the price of an appointment. If you want the full detail on how the dry sheet format works, we wrote a complete guide to the Exosome Hydrating Masks.

Exosomes vs Hyaluronic Acid

These two are not rivals, they are teammates, and they answer completely different questions.

Hyaluronic acid is a hydration specialist. It draws water into the upper layers of skin and holds it there, which is why skin looks instantly plumper after using it. That is its whole job and it is excellent at it.

Exosomes are about visible rejuvenation across a broader set of concerns: radiance, tone, firmness, elasticity and texture, as well as hydration.

Use both. If you want the dedicated version, the Hyaluronic Acid Serum (£9) layers underneath your exosomes beautifully. Conveniently, the Exosome Glow Serum already contains 1% hyaluronic acid, so you are getting a dose of it either way.

Exosomes vs Retinol

This is the comparison people care about most, and it is worth being even-handed, because retinol is a brilliant ingredient and we sell it happily.

Retinol is a traditional active with decades of evidence behind it. It also comes with a known trade-off: a purging period, dryness, flaking and sensitivity, particularly in the first few weeks. Plenty of people never get past that stage, and plenty of people simply cannot tolerate it.

Exosomes offer 6-in-1 skin rejuvenation results, without the irritation of traditional actives.

They share some outcomes. Both can visibly improve texture, tone and radiance over time. The difference is the route and the tolerability. Retinol works hard and asks something of your skin in return. Exosomes are gentler and suit people who want visible results without the downtime.

Can you use both? Yes, and many people should. Use retinol at night and exosomes morning and night, applying exosomes first on damp skin. If you are unsure about layering, what not to mix with retinol answers the exact question you are about to have.

Exosomes vs PDRN

Both are next-generation ingredients that crossed over from professional treatments into at-home skincare, and both target the look of tired, stressed skin. PDRN is best known for skin renewal and an instant glass-glow finish. Exosomes are known for 6-in-1 visible rejuvenation and hydration.

They are complementary rather than competing. If you want the full breakdown, we compared them directly in PDRN vs Exosomes, and the PDRN Serum (£18) page has the product detail.

How Exosomes Compare to Other Actives

Working on hyperpigmentation too? Vitamin C is the one to pair with your exosomes in the morning. And if you are still deciding between glow ingredients,vitamin C vs niacinamide vs exosomes is the head-to-head.

Can You Use Exosomes With Other Actives?

Yes. This is one of the easiest ingredients to slot into an existing routine, which is a genuine relief in a category full of things that fight each other.

The sensible order is thinnest to thickest. Cleanse, then exosomes on damp skin, then any other targeted serum, then moisturiser, then SPF in the morning. Exosomes go early because they are lightweight and you want them on skin, not on top of a moisturiser.

If you are using several strong actives already, introduce exosomes on their own for a week before stacking. Not because there is a known conflict, but because that is how you find out what is actually working.

With the how settled, here is what is actually in the bottle.

We make two exosome products, and we are going to be straight with you about both, including one detail that most brands would quietly leave out.

Exosome Glow Serum - (£20 | 30ml)

Our hero exosome product.

Your facial-in-a-bottle. A hydrating glow serum powered by plant-derived exosomes that visibly brightens, smooths and renews skin in 14 days, with 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: supports visible skin rejuvenation, with a 55% reduction in visible signs of skin stress (redness, puffiness, visible irritation) and a 63% increase in skin renewal activity 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™: a 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* 
• Clinic worthy rejuvenated skin in 14 days* 
• 6-in-1 skin rejuvenation: clinically proven to visibly improve radiance, hydration, tone, firmness, elasticity, and texture* 
• 55% reduction in visible signs of skin stress (redness, puffiness, visible irritation)*
• 63% increase in skin renewal activity in 8 hours*
• Proven to deliver up to 12-hours of hydration** 
• Helps support natural collagen production 

*4-week clinical study of 26 people

**Clinical study of 31 people

*In-vitro testing of Cica Exosomes showed a 55% reduction in pro-inflammatory markers and a 63% increase in markers associated with skin renewal after 8 hours.

The essentials

Suitable for: All skin types · Sensitive skin · Pregnancy and 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, then moisturiser, then SPF in the morning.

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-looking skin instantly 
• Pair with Bio-Active Ceramide Moisturiser (£19) for the ultimate firming and 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 you can see and feel instantly.

An important distinction, and we would rather you heard it from us. This mask does not contain exosomes. Instead, it contains OXYGESKIN®, an active that helps your skin’s own natural exosomes work more efficiently and helps skin bounce back from daily stress. Think of the serum as the daily glow step, 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 evenly across the face 
• OXYGESKIN®: a flower-powered active that boosts oxygen flow and cell energy, helping skin bounce back from daily stress faster 
• p-REFINYL®: visibly smoothes and refines skin texture 

Results from the lab

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

*Test conducted on 20 volunteers.

The essentials

Suitable for: All skin types · Sensitive skin

Targets: Dullness · Dehydration · Texture · Tired-looking skin

When to use: Whenever your skin needs a fast, 10-minute high-performance boost. Before a big event, post-travel, post-flight, or any time dullness hits.

How it feels: Ultra-thin and weightless once activated. No drips, no slipping, no rinsing needed.

INKEY Tip: Use the Exosome Glow Serum (£20) before applying this mask, and Bio-Active Ceramide Moisturiser (£19) after, for a full glass-skin system.

Used together, the serum brings the exosomes and the mask brings the boost and the seal. Used alone, the mask is a lovely ten-minute freshen-up but it is not an exosome treatment. We would rather tell you that plainly than let a product name do your thinking for you.

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The exosome category is growing quickly, and quality varies enormously. Here is how to judge any product on the shelf.

Check the source. This is the single most informative thing on the label.

Look past the percentage. A high number on the front of a box tells you less than you think. Concentration only matters alongside the quality of the source, the stability of the formula, how well the rest of the ingredients support the active, and whether the finished product has actually been tested. A poorly formulated 5% will lose to a well-formulated 1% every time. Ours is 1% Cica Exosome Complex, and it is the tested formula around it that does the work.

Choose the right format.

What to avoid.Vague labelling that says “exosome technology” without naming a source. No stated concentration anywhere on the packaging or website. No supporting testing of any kind, in-vitro or clinical. None of these mean a product is bad, but all of them mean you are being asked to take it on trust. You are allowed to ask for more than that.

Are Exosomes Safe?

Yes. Exosomes are well tolerated by the vast majority of people, including those with sensitive skin, which is one of the main reasons they have become so popular as an alternative to harsher actives. Our formula is dermatologically tested and designed for daily use, morning and evening.

Side effects are uncommon and mild when they occur. Some people notice slight tingling on first application, or temporary redness if their skin is already compromised. This usually settles within a few uses. If any reaction persists, stop using the product.

Seek medical or professional advice first if you: have an ongoing skin condition such as eczema, psoriasis or rosacea, are currently under dermatological care, or are using prescription topical treatments. The Exosome Glow Serum is suitable during pregnancy and breastfeeding, but if you are unsure about any product at that time, check with your doctor or midwife.

And please patch test. Apply a small amount to your inner forearm or behind your ear and wait 24 hours before putting anything new on your whole face. It takes a day and it saves a week. If you want the full method, why do I need to do a patch test walks through it properly.

If you have seen claims about exosomes online that sounded too good to be true, we went through the most common ones in are exosomes safe: 5 exosome skincare myths debunked.

With the products understood, here is the detail behind the formula and what to realistically expect, week by week.

Expert Tips and Pro Advice

Master the technique. Damp skin, three to four drops, press and pat. Damp skin helps the formula spread evenly across your face instead of sitting in patches, and pressing rather than rubbing means more product ends up on your skin and less on your hands. It is a fifteen-second habit that meaningfully changes your results.

The four most common mistakes:

1. Applying to bone-dry skin. The most frequent error and the easiest to fix. Leave your face slightly damp after cleansing 
2. Using far too much. Three to four drops. A flooded face does not absorb faster, it just absorbs less efficiently and costs you more 
3. Layering in the wrong order. Thinnest to thickest, always. Exosomes go on early, before heavier textures 
4. Giving up at day five. Hydration is immediate, but rejuvenation is cumulative. The clinical results are at 14 days and four weeks for a reason 

Adjust for your life, not just your skin type. Central heating in winter and air conditioning in summer both pull moisture out of the air and out of your skin, so you may want a richer moisturiser over the top in those months. Flying is dehydrating, so apply before you board rather than after you land. Poor sleep and high stress show up on your face as dullness and puffiness, which is precisely the look this ingredient targets. Skincare cannot fix a bad month, but it can stop your face announcing it.

How Long Until You See Results?

Honest expectations, stage by stage.

Results build with continued use, which is exactly why we priced it so daily use is realistic rather than rationed.

*4-week clinical study of 26 people

**Clinical study of 31 people

INKEY’s Cica Exosome Complex

Our complex is built on plant-derived Cica Exosomes from centella asiatica, at 1%. Here is what that delivers, framed as what you will see:

• Skin looks visibly more rejuvenated and radiant 
• Dull-looking skin looks revitalised and brighter 
• Skin looks calmer, with less visible redness and puffiness 
• Skin looks smoother and more refined in texture 
• Helps support natural collagen production 
• Supports skin’s resilience to daily stress 

The Full Formula

Every one of those is doing a job you can see. There is no filler in the list and nothing in there purely to look impressive on a box. If you want the deeper detail on individual actives, our ectoin and peptides guides go further.

The Clinical Proof

*4-week clinical study of 26 people

**Clinical study of 31 people

*In-vitro testing of Cica Exosomes showed a 55% reduction in pro-inflammatory markers and a 63% increase in markers associated with skin renewal after 8 hours.

Your Complete AM Routine

1. Cleanse
2. Exosome Glow Serum (£20) on damp skin 
3. Moisturise with Omega Water Cream (£11) for oily and combination skin, or Bio-Active Ceramide Moisturiser (£19) for dry, sensitive or mature skin 
4. SPF 30 or higher, such as Dewy Sunscreen SPF 30 (£15) 

Your Complete PM Routine

1. Cleanse, double cleansing if you have worn makeup or SPF 
2. Exosome Glow Serum (£20) on damp skin 
3. Moisturise, slightly richer than your morning choice if skin needs it 
4. Targeted treatment as needed, such as retinol two or three nights a week, PDRN Serum (£18), or an Exosome Boosting Dry Sheet Mask (£20 for three) as a weekly treatment 

Pairings by Concern

Skincare has become far more complicated than it needs to be, and exosomes are a perfect example. Here is a genuinely interesting ingredient that spent the last few years buried under language most people could not parse, in treatments most people could not afford. Strip the jargon away and it is simple: exosomes are tiny natural particles, and in a serum they support your skin’s natural processes so it looks fresher, calmer and more radiant.

What used to require an appointment and a serious budget now takes fifteen seconds at your bathroom sink and costs £20. That is the whole point of what we do. Clear guidance, proven ingredients, real results.

Get clinic-worthy glow at home with the Exosome Glow Serum, £20 for 30ml, and see what your skin looks like in fourteen days. Still weighing up your glow options? Compare them properly first with vitamin C vs niacinamide vs exosomes.

Featured in Vogue, Sheerluxe, Glamour, and Marie Claire. Rated 4.5 stars by nearly 1,000 customers. And it costs £20.

Shop Exosome Serum now

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