Key takeaways
- Rejuran works by delivering polynucleotides directly into the dermis, where they gently support the skin’s natural repair and renewal processes, rather than targeting concerns at the surface level.
- The mechanism is gradual and cumulative by nature. Fibroblast activity may be supported over a course of sessions, which means any possible changes are more often seen as part of a planned treatment journey, rather than after a single appointment.
- Individual responses vary considerably, and outcomes are never guaranteed. Under Australian health regulations, sitting down to chat with a qualified medical professional is an essential first step before any treatment proceeds.
If you’ve already done some research on Rejuran and found yourself wanting to understand more than just the surface level explanation, you’re in the right place.
Most introductions to the treatment cover the basics. Polynucleotides, salmon DNA, skin rejuvenation. But understanding how Rejuran actually works once introduced is a different conversation entirely, and one that’s worth having before you book anything.
In this post, we’ll cover how Rejuran is delivered, how it interacts at the cellular level, how your skin may respond, and what to expect going forward.
How Rejuran is delivered to the treatment area
Rejuran is built around polynucleotides, long chain DNA fragments sourced from salmon that the body may recognise as biocompatible rather than a foreign substance. That biocompatibility is not incidental, it is central to what the treatment is intended to do once introduced.
And where it reaches matters enormously. Rejuran is administered directly into the dermis, the deeper structural layer of the skin, by a qualified medical professional. This is not a surface treatment. Polynucleotides sitting at the skin’s outer layer would have little meaningful opportunity to interact with the repair and renewal processes happening beneath it.
The dermis is where the skin’s structural activity is most concentrated. Collagen, elastin, and the cells responsible for producing them all reside here. Delivering polynucleotides directly into this environment is what allows Rejuran to engage with the skin at the level where change may be possible, rather than working around it.
It is also why this is not a treatment that can be replicated at home or through topical products. The delivery itself is a clinical procedure, performed by a trained practitioner in a controlled setting, and that precision is part of what defines how Rejuran works.
Individual responses will vary, and a consultation with a qualified medical professional is required before any treatment is considered.
How Rejuran works at a cellular level
Once polynucleotides are introduced to the treatment area, the biological interaction begins The skin’s cellular environment contains fibroblasts, the cells primarily responsible for producing collagen and elastin. These are the proteins that give skin its structure, firmness, and ability to bounce back.
As the skin ages or is affected by environmental stressors, fibroblast activity can slow, and the visible signs of that slowdown are what most people are trying to address when they explore treatments like Rejuran.
Polynucleotides may help support fibroblast activity by providing the cellular signals that encourage repair and renewal. Rather than introducing a foreign compound that overrides the skin’s biology, the mechanism is designed to work alongside it. The body may recognise polynucleotides as a naturally occurring substance and respond accordingly, engaging its own processes rather than simply reacting to something external.
This is not an immediate or dramatic shift. The cellular response to polynucleotides is gradual by nature, reflecting the way the skin’s own repair processes actually function. This is not a treatment that delivers overnight results, and understanding that distinction is important when forming realistic expectations.
How the skin responds at a cellular level will also vary from person to person depending on individual biology, skin condition, and lifestyle factors. A consultation with a qualified practitioner is required to understand what that process may look like for your skin specifically.
How the skin’s structure may respond
As polynucleotides begin to engage with the skin’s cellular environment, the changes that may follow are structural rather than superficial. Where many cosmetic treatments address the appearance of the skin from the outside, Rejuran is designed to support what is happening within the dermal layers, and that distinction shapes the kind of changes that may gradually become apparent.
Collagen and elastin production are central to this. As fibroblast activity is supported over the course of treatment, the skin’s structural framework may begin to reflect that. Skin that has felt less firm, less resilient, or less hydrated than it once did may gradually respond as the underlying architecture is supported from within. Texture, tone, and overall skin quality are the areas most commonly associated with this structural response.
Any possible changes are cumulative. A single session is unlikely to reflect the potential of what the treatment may offer. The structural shift that Rejuran is designed to support builds progressively, which is why a course of sessions is more commonly discussed in clinical settings than a standalone appointment.
As with everything related to this treatment, individual responses vary considerably. The degree to which the skin’s structure may respond depends on a range of personal factors that can only be properly assessed through a consultation with a qualified medical professional.
Supporting the skin’s natural reset
Rejuran is not designed to change the skin, it is designed to remind it of what it is already capable of. That is what sits at the heart of bio-regenerative treatments and what separates it from treatments that work by adding volume, relaxing, or resurfacing.
The concept of a biological reset is not about reversing time or guaranteeing a particular outcome. It is about creating the conditions within the skin’s own environment that may allow its natural processes to function more effectively. For skin that has been affected by ageing, sun exposure, lifestyle factors, or simply the accumulation of daily stress, that kind of support may be worth exploring.
Polynucleotides are broken down naturally by the body over time, which means the treatment does not leave a permanent foreign presence in the skin. What it might leave behind is a dermal environment that has been supported to renew itself more effectively, and the gradual visible changes that can follow from that.
It is important to approach this with realistic expectations. The biological reset that Rejuran is designed to support is a process, not an event. How that process unfolds will differ from person to person, and the only way to understand what it may mean for your skin specifically is through consultation with a qualified medical professional.
Professional standards at Luxe Lips
At Luxe Lips, a cosmetic clinic in Melbourne, our care is grounded in medical ethics and quiet clinical responsibility. Every treatment pathway is approached as a medical process, with established health protocols and safety guiding each step.
Across our clinics in Moonee Ponds, Camberwell, and Brighton, our medical professionals carry out a thorough screening process for every person. For those considering Rejuran, this includes reviewing medical history, assessing anatomical suitability, and considering psychological readiness. In line with local guidelines, this evaluation helps determine whether a proposed plan aligns with your health.
Medical professionals proceed only when a treatment is clinically appropriate. If your underlying concern, the condition of the surrounding skin, or your broader health profile means a Rejuran approach isn’t the right fit, we will explain why and discuss what that means for you. The focus is always on clear information and maintaining a clinical environment where safety and ethical standards come first.
Because responses and circumstances vary, a consultation is required to determine suitability before Rejuran injectable is considered.
Note: Individual responses vary. A consultation with a qualified professional is required to determine the suitability of any treatment for your specific needs.
Questions we’re often asked about how Rejuran works
Rejuran works by delivering polynucleotides into the dermis, the deeper structural layer of the skin, where they interact with the skin’s cellular environment. Rather than targeting the surface, the treatment is designed to support the skin’s natural repair and renewal processes from within.
This approach means the changes that may follow are gradual and cumulative rather than immediate. The skin’s own biology is doing the work, with polynucleotides providing the cellular signals that may help support that process. Individual responses will vary depending on skin condition, lifestyle, and overall health.
If you’d like to understand whether this approach may be suited to your skin, speaking with a qualified practitioner is the right starting point.
The key distinction lies in the mechanism. Many cosmetic treatments work by adding volume, relaxing muscle activity, or resurfacing the skin from the outside. Rejuran takes a different approach entirely, working within the dermal layer to support the skin’s own repair and renewal processes rather than altering its appearance through external means.
This makes Rejuran a bio-regenerative treatment rather than a corrective one. It is not designed to add volume, relax, or resurface. For people exploring treatments that work with the skin’s natural biology, that distinction is often what makes Rejuran worth discussing with a practitioner during a consultation. Rejuran is not intended to add volume, relax muscles, or resurface the skin. For those interested in treatments that align with the skin’s natural biological processes, sitting down to chat with a qualified medical professional is the most appropriate way to explore whether this approach may be suitable for their needs.
Rejuran works gradually, reflecting the way the skin’s own repair processes function. Some individuals may begin to notice changes within a few weeks of their first session, while for others the progression may be more subtle and take longer to become apparent.
Results are cumulative, meaning a course of sessions is more commonly associated with meaningful change than a single appointment. The Australian Health Regulations highlights the importance of understanding realistic expectations before undertaking any cosmetic procedure. How quickly Rejuran may work for you specifically is a question best explored during a consultation with a qualified medical professional.
Both Rejuran and PRP are bio-regenerative treatments that work with the body’s natural biology rather than introducing synthetic compounds. However their mechanisms differ. PRP uses concentrated platelets derived from the patient’s own blood to support skin repair, while Rejuran delivers polynucleotides sourced from salmon DNA directly into the dermis.
Where PRP relies on the growth factors present in the patient’s own blood, Rejuran introduces polynucleotides that may support fibroblast activity and the skin’s structural renewal processes. The two treatments are sometimes explored in combination depending on individual clinical assessment. If you’d like to understand how these treatments compare for your specific concerns, a consultation with a qualified practitioner is the appropriate next step.
Rejuran does not stimulate collagen directly. Rather, it is designed to support fibroblast activity, and fibroblasts are the cells responsible for producing collagen and elastin within the dermis. By delivering polynucleotides into the skin’s cellular environment, the treatment may create conditions that encourage these cells to function more effectively.
According to Healthdirect Australia, collagen plays a key role in the skin’s structure and firmness, and its production naturally slows over time. Supporting the processes associated with collagen production is where much of the clinical interest in polynucleotide treatments stems from.
Results are not guaranteed and will vary between individuals. A consultation with a qualified medical professional is essential before any treatment plan is considered.
