From Vitamin A to Exosomes: What’s Driving the Next Era of Age-Defying Skincare?
Author: Sarah-Jane Corfield-Smith
Reviewed By: Rebecca Moss
Published: 18 September 2026
Exosomes are the skincare ingredient everyone is talking about. Having gained traction and popularity in Korea, they were initially used in clinical treatments, but now technology has developed to incorporate them into topical skincare.
Exosomes target regenerating, rejuvenating, and restoring the skin, so it is perhaps inevitable that they are being compared and contrasted with retinoids, which are considered the gold standard in age-defying skincare for all the same reasons.
The way in which they both work, the speed at which they garner results. Retinaldehyde, for instance, works 11x faster than retinol by sitting just one conversion step away from the skin's active form, retinoic acid - and the fact that they each have unique characteristics is central to understanding how they truly compare. And while at first it may seem that one could easily replace the other, when you look more closely at what each ingredient does, there are compelling reasons to find a place for both in your skincare regime.
Key Takeaways:
✓ Retinoids work by renewing the skin, while exosomes work by supporting how the skin repairs itself.
✓ They work through different mechanisms in the skin, which is why they can be used together without conflict.
✓ Retinal remains one of the most effective ingredients for long-term wrinkle reduction.
✓ Exosomes don’t replace retinal; they work alongside it - helping to optimise performance and support skin resilience over time.
What Do Retinoids Do for Ageing Skin?
Retinoids are the umbrella term for the various forms of vitamin A used in skincare, with some of the most common being retinol and retinaldehyde (aka retinal). They’re widely considered one of the most effective ingredients for ageing skin because they stimulate collagen production, helping strengthen the skin’s structure, improve firmness and over time, reduces the appearance of fine lines. In addition, they also help regulate pigment production, which can fade areas of uneven pigmentation and create a more even skin tone.
These benefits for skin ageing are driven by how retinoids work within the skin. When applied, they convert into the biologically active form of vitamin A, retinoic acid. This then binds to specific receptors within skin cells. This process accelerates cell turnover, encouraging the shedding of dull, damaged surface cells and promoting the emergence of fresher, healthier skin.
Not all derivatives are equal, and the difference lies in how many steps each takes to become active in the skin. Retinol must convert twice before reaching retinoic acid. Retinal requires just one. That single conversion step is why retinal works 11x faster than retinol[1] – and why it sits at the heart of Medik8's vitamin A range.
Retinoids are often framed as the gold standard for addressing ageing skin concerns, but results develop gradually and require consistency.
✓ In weeks 2 to 4, many people notice a smoother texture and a more refined surface.
✓ By weeks 8 to 12, fine lines often begin to soften as collagen stimulation increases.
✓ With long-term use, skin typically appears firmer, clearer, and more even in tone and texture.
However, retinoids do come with their challenges. Skin can become dry and flaky as it adapts, and this can also lead to redness, irritation and temporary breakouts. It’s also advised to avoid using them during pregnancy. At Medik8 we always recommend a ‘low and slow’ approach when introducing retinoids into your routine. And there’s a Crystal Retinal strength for everyone. Over time, you can ladder up with progressive strengths from 0.01% - 0.24%. Plus, we suggest supporting the skin barrier with moisturiser and to protect the skin with sunscreen.
What Do Exosomes Do for Ageing Skin?
Exosomes support ageing skin by enhancing cellular communication, helping to improve how skin cells repair, regenerate and respond to stress over time. As these processes naturally slow with age, supporting them with exosomes can help maintain a more resilient, smoother, and healthier-looking complexion.
Found naturally in all living cells, exosomes are tiny, self-contained bubbles filled with regenerative molecules. They are released to carry signals and messages between them, and in skincare, this signaling supports:
Why Are People Comparing Exosomes and Retinol?
Both are high-performance ingredients often compared because they target similar concerns, especially in regards to visible signs of ageing:
✓ Fine lines
✓ Uneven skin tone
✓ Loss of firmness
✓ Collagen support
✓ Smoother skin texture
✓ Overall skin rejuvenation
But their strengths aren’t identical. Other skincare concerns, such as blemishes, redness, pigmentation and sebum production may be better addressed by one over the other.
They also work via very different biological pathways, which can impact how skin tolerates each ingredient.
Retinol (a vitamin A derivative) has been extensively studied in topical skincare for decades and is well known for stimulating collagen production and accelerating cell turnover, but it can irritate some skin types.
Retinal (another vitamin A derivative) is further along the vitamin A pathway than retinol which means it is faster to get to to work. In fact, it has been proven to work 11x faster than retinol[1]. At Medik8 we have a unique stability system that means the retinal found in our Crystal Retinal serum has unmatched potency, long-lasting effectiveness at targeting the appearance of fine lines and wrinkles, hyperpigmentation, uneven skin texture and loss of firmness, without irritation. And it’s for all these reasons that Crystal Retinal has become the no. 1 retinal serum worldwide.[2]
Exosomes, by contrast, are only just emerging in the skincare space, having originated in the professional treatment arena, and are positioned around supporting and strengthening cellular communication to optimise repair processes, and are very well tolerated by all skin types.
When a new skincare ingredient emerges, it’s common for people to compare it to something more familiar. Framing it against a known product makes it easier to understand. While exosomes and retinol share some similarities in the results they deliver, they differ in both what they can ultimately achieve and how they work.
And while retinal and exosomes also differ, for all the same reasons, because they are both cutting-edge ingredients at the forefront of advanced, high-performance skincare it is, perhaps inevitable, there will be those that want to compare them side by side.
Exosomes vs. Retinol vs. Retinal
Vitamin A has decades of clinical research behind it; exosomes are newer to topical skincare, with an emerging but growing evidence base. Here's how they compare directly.
| Feature | Retinol | Retinaldehyde | Exosomes |
|---|---|---|---|
| Strengths | Available in multiple strengths from 0.1 - 1%. | Available in multiple strengths from 0.01%-0.24%. More potent than retinol as it's only one conversion step away from retinoic acid. | Concentrations vary depending on product formulation. |
| Cell turnover? | Yes | Yes | No. Supports cellular signalling. |
| Collagen stimulation? | Yes | Yes | Emerging evidence, especially from in-clinic treatments. |
| Does it irritate? | Carefully phased, well-formulated products minimise irritation. | Carefully phased, well-formulated products minimise irritation. | Rarely in well-formulated products. |
| Best for | Texture, wrinkles and tone. | Texture, wrinkles and tone. | Barrier support and skin recovery. |
| Pros | Boosts collagen, unclogs pores and reduces oil production, improves elasticity and accelerates skin turnover for brighter looking skin. | Works faster than retinol to boost collagen, unclog pores and reduce oil production, improve elasticity and accelerate skin turnover for brighter looking skin. | Very well tolerated. Good for repairing and calming skin. |
| Cons | Some skins can find it irritating and may require an initial adjustment period. Needs to be used consistently for a length of time to see results. Cannot be used during pregnancy. |
Some skins can find it irritating and may require an initial adjustment period. Even though it works faster, it still requires time and consistency to see results. Cannot be used during pregnancy. |
There is currently not as much clinical research due to it being a new ingredient. Potency can vary if not well formulated. |
Youthful Vitality Serum with Prismatic PDRN & Triple Exosome Complex
30ml / £79.00
Crystal Retinal Ceramide Eye 3
Smooth & Lift Eye Cream Gentle-Release Vitamin A
15ml / £42.00
Can You Use Exosomes with Retinol?
Yes, you can use exosomes with retinol and retinal. They work through different pathways in the skin, meaning they can be used together without conflict. And it’s this synergy that makes the combination powerful. They’re compatible rather than competitive: vitamin A drives renewal, while exosomes help optimise recovery.
Vitamin A latches itself onto cell receptors to increase cell turnover and collagen production, whereas exosomes work as messengers between cells to encourage repair and regeneration. This complementary action creates a “barrier-buffering” effect, where exosomes can support skin resilience and reduce the irritation often associated with retinoid use.
It’s a skincare ingredient pairing that can be utilised, whatever strength or type of vitamin A you’re using, as it will further enhance the benefits. For sensitive skin, the addition of exosomes can reduce any potential side effects but this will be even more greatly reduced if using retinal as it is known for being less irritating. For regular retinol users, exosomes will strengthen the skin barrier, allowing for the option of increasing to a higher-strength.
Importantly though, you don’t need both to see visible results. Either ingredient is effective on its own.
Do Exosomes Replace Retinol?
No, they do not. And this is because while they achieve some similar results, they are behaving in different ways within the skin. One is not an upgrade of the other.
Retinol remains one of the most well-researched and proven ingredients for long-term wrinkle reduction. Exosomes, on the other hand, are designed to support the skin’s repair processes and improve overall skin quality.
Rather than replacing retinol, exosomes are best viewed as a complementary addition, enhancing results better than if used singularly.
How to Choose between Exosomes and Retinal
If you currently don’t use either retinal or exosomes in your skincare regime, here’s how to choose which is best for you depending on your skin goals. However, because exosomes and retinal work synergistically there really is no reason to choose between the two ingredients.
Choose retinal if:
✓ You want proven wrinkle reduction
✓ You want pigment correction
✓ You want smoother skin
✓ You want to unclog pores and reduce blemishes
✓ You’re building a foundational anti-ageing routine
Consider exosomes if:
✓ Your skin barrier is compromised
✓ You want to reduce redness
✓ You want to improve hydration
✓ Your skin needs repairing
✓ You want something to pair with other actives
Boost Your Retinol Results with Exosomes
As retinol, retinal, and exosomes are not only compatible but, when used together, boost results, it makes sense to use the two alongside each other. Here is how to incorporate both into a daily routine:
Morning:
Total Moisture Daily Cleansing Gel
Barrier-Boosting Gel-to-Foam with Moisture MagnetsTM & Prebiotics
145ml / £29.00
Youthful Vitality Serum with Prismatic PDRN & Triple Exosome Complex
30ml / £79.00
Total Moisture Daily Facial Cream™
AM/PM Multi-Layered Moisturisation with H.E.O.® & Prebiotic Peptides
50ml / £50.00
Advanced Day Ultimate Protect™
Age-Defying Moisturiser with Photolyase SPF 50+ | PA++++
50ml / £59.00
Apply your exosome serum after cleansing to support hydration, skin resilience and overall skin quality throughout the day. Using it in the morning also helps prep and support the skin ahead of your evening vitamin A application.
Apply retinoids in the evening so that it works in sync with the skin’s natural overnight renewal cycle. Follow with moisturiser to maintain barrier support.
Evening:
Make-Up Dissolving Oil-to-Milk
Purifying Moringa & Omega-6
140ml / £35.00
Youthful Vitality Serum with Prismatic PDRN & Triple Exosome Complex
30ml / £79.00
Top tip: There’s no need to change your existing vitamin A routine. Simply introduce an exosome serum in the morning to help support and amplify your results.
If you’re new to vitamin A:
Crystal Retinal 3 (use Crystal Retinal 1 if you have sensitive skin) + Exo-PDRN Prismatic+
Crystal Retinal 1 and 3 are the ideal entry points into vitamin A. Delivering the proven age-defying benefits of retinaldehyde at a concentration gentle enough for sensitive skin and beginners. Enriched with hyaluronic acid, vitamin E and glycerin to maintain hydration, neutralise free radical damage and reinforce the skin barrier, it's specifically designed to support skin through the vitamin A adjustment period and beyond.
Exosomes help support skin resilience, allowing the skin to adapt to vitamin A more comfortably with reduced visible irritation.
For experienced vitamin A users: Crystal Retinal 6 (and then work up to Crystal Retinal 24) + Exosomes
For those already comfortable with vitamin A, Crystal Retinal 6 through to 24 delivers progressively higher concentrations of stabilised retinaldehyde for more advanced, visible age-defying results. The same enriched formula means as you ladder up, your skin stays comfortable, resilient and primed to get the most from each concentration.
Exosome technology helps support and optimise skin performance, enhancing results and maintaining barrier resilience needed for higher-strength retinal cells to deliver more advanced, visible age-defying results.
Harnessing Exosome Technology with Medik8
At Medik8, we’ve harnessed technology once reserved for medi-spas and professional clinics. Our latest innovation, Exo-PDRN Prismatic+ combines pioneering vegan (certified by The Vegan Society to be formulated without animal-derived ingredients or by-products) Prismatic PDRN, which has a stable, tetrahedral structure small enough to glide through the skin's barrier to support recovery and calm visible redness, with a highly concentrated Triple Exosome Complex that supports natural skin signalling and strengthens the barrier. It has been clinically proven to improve the look of skin luminosity and vitality in 7 days.[3]
SHOP NOWC-Tetra Advanced, contains encapsulated plant-based exosomes, known as phyto exosomes, which are chosen specifically for their hydrating and anti-inflammatory properties. They are also tiny in size, so they can travel deeply into the skin. They work to reinforce the skin’s natural defence system and soothe irritation, thereby helping the skin recover from exposure to environmental stressors.
It has been clinically proven to visibly brighten skin and even tone in 7 days for a radiant, luminous complexion.[4]
Medik8’s Approach to Age-Defying Skincare
Here at Medik8, we use advanced encapsulation technology to enhance the stability and optimise delivery of our ingredients, ensuring formulations perform at their best. Exosomes are not competitors to vitamin A; rather, they complement it. And we will always be leading the way in expert-led skincare that works harder and harmoniously together.
Vitamin A continues to be the gold-standard of age-defying skincare, with a long-standing reputation for improving the appearance of fine lines, firmness, and overall skin texture. There is no need to abandon what already works for your skin. Instead, by incorporating exosomes into your routine, you can help amplify the visible benefits of retinol while supporting skin resilience and comfort.
Rather than chasing the idea of “reversing” ageing, we believe in a youth-renewing, skin-longevity philosophy, where renewal and repair work in harmony to deliver healthier, more balanced-looking skin over time. Exo-PDRN Pristmatic+ does exactly that, rather than focusing one one skin concern it has a multi-faceted approach to total skin rejuvenation, targeting six skin concerns in one go.
[1] *G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378
[2] Source: independent market research by Kline & Company analysing manufacturer-level retinal serum sales for 2025. To verify, visit: https://www.medik8.com/pages/claims
[3] Proven via independent clinical study on Exo-PDRN Prismatic+ on 60 volunteers over 8 weeks.
[4] Proven via independent clinical study conducted over 4 weeks on 32 participants.
[5] Proven via independent clinical study on 1 tube of Crystal Retinal 6. Tested on 33 participants over 12 weeks.
Frequently Asked Questions
Are exosomes stronger than retinol?
They’re not stronger as they work differently. Retinol increases cell turnover and stimulates collagen production. Exosomes act like messengers in the skin, encouraging skin repair and regeneration. Retinoids are available in different strengths, allowing you to build up a tolerance to more concentrated doses, whereas exosomes are generally well-tolerated immediately by all skin types.
Which is better for deep wrinkles?
Both are good for targeting deep wrinkles, and they work in synergy. However, if you had to choose one, opt for retinal. Crystal Retinal has been clinically proven to reduce the appearance of wrinkles by 20% in 12 weeks.[5]
Can I use exosomes with retinaldehyde?
Absolutely! We recommend applying an exosome-based serum after your evening cleanse and before applying your retinal.
Are exosomes better for sensitive skin?
Exosomes are great for sensitive skin because they work at repairing the skin barrier, which can often be compromised with sensitive skin, and they help reduce internal inflammation.
Which vitamin A derivative should I pair with exosomes?
All forms of vitamin A can be used alongside exosomes. The key is selecting the right derivative at a concentration suited to your skin type and tolerance. Once that is established, exosomes can be incorporated to complement and enhance the overall results.
Can I use exosomes with any retinal strength?
Yes, exosomes can be used with any strength of retinol ranging from the lowest concentration formulated for beginners and sensitive skin, all the way up to the highest concentrations for regular retinol users.
What if I’m already seeing results from retinoids?
That’s great. Incorporating exosomes alongside can enhance the results as they can mitigate potential irritation, dryness, and flaking, while supporting skin repair and strengthening the barrier. This improved resilience can make your skin more tolerant over time, giving you the option to increase to a higher-strength retinoid if and when you choose.
Can you use exosomes with tretinoin?
We always recommend consulting your dermatologist when using tretinoin for personalised advice.