How long do the results of a Rejuran treatment typically last?
The results of a Rejuran treatment, a popular polynucleotide-based skin rejuvenation procedure, typically last between 6 to 12 months. However, this duration is not a fixed guarantee and can vary significantly based on a multitude of individual factors, including age, skin condition, lifestyle, the number of treatment sessions received, and the specific protocol used by the practitioner. Understanding the science behind the treatment and the factors influencing its longevity is key to setting realistic expectations.
To grasp why the results are not permanent, it's essential to understand what Rejuran is and how it works. The core active ingredient is highly purified polynucleotides (PN) derived from salmon DNA. These are not live cells but rather building blocks. When injected into the dermis—the skin's foundational layer—they act as a powerful biological signal. They don't just add temporary volume like some fillers; instead, they communicate with your skin's own cells, primarily fibroblasts, encouraging them to ramp up the production of your body's own collagen, elastin, and hyaluronic acid. Think of it as giving your skin's repair crew a detailed blueprint and the motivation to get to work. This process of neocollagenesis (new collagen formation) is not instantaneous; it's a gradual rebuilding project that takes time. The initial results you see are often due to improved hydration, but the true, structural improvements develop over weeks and months as your skin remodels itself.
Because the mechanism is biological stimulation rather than simple physical filling, the longevity is tied to your skin's natural metabolic cycle. The injected polynucleotides are eventually broken down and metabolized by the body, but the new, healthier collagen network they helped create remains. However, this new collagen is still subject to the same daily environmental and intrinsic aging processes as your original collagen. This is why maintenance is necessary to sustain the optimal results.
The single most influential factor on how long your results last is the treatment plan itself. A single session of Rejuran is often considered a "starter" treatment. It provides a boost in hydration and initiates the repair process, but its effects are generally shorter-lived, perhaps in the 3-6 month range. For more substantial and lasting structural improvement, a initial series of treatments is almost always recommended. This protocol is designed to consistently stimulate fibroblasts, creating a cumulative effect that builds a more robust collagen foundation.
The table below outlines a typical treatment protocol and its impact on longevity:
| Treatment Phase | Typical Protocol | Impact on Results & Longevity |
|---|---|---|
| Initial Loading Phase | 3-4 sessions, spaced 4 weeks apart. | This phase aims to saturate the skin with polynucleotides, providing a strong, continuous signal for collagen production. It builds a foundation for longer-lasting results. Patients often see significant improvement in skin texture, elasticity, and fine lines by the end of this phase. |
| Maintenance Phase | 1 session every 6-12 months. | After the initial series, maintenance sessions "top up" the skin's polynucleotide levels, providing ongoing stimulation to counteract natural collagen degradation. The frequency (closer to 6 or 12 months) depends heavily on individual factors. |
Your personal biology and habits play a massive role in determining where you fall on the 6-to-12-month spectrum. A younger individual (e.g., in their late 20s or 30s) using Rejuran for preventative aging will likely have more active fibroblasts and a slower rate of collagen breakdown, allowing results to last closer to the 12-month mark. For someone in their 50s or 60s seeking to repair significant photoaging and volume loss, the baseline collagen degradation is faster, potentially shortening the duration of optimal results to around 6-9 months, necessitating more frequent maintenance.
Lifestyle factors are equally critical. Sun exposure is the number one external aggressor that breaks down collagen. Consistent, daily use of a high-SPF broad-spectrum sunscreen is non-negotiable if you want to protect your investment. Smoking, high sugar consumption, chronic stress, and poor sleep all accelerate the aging process by increasing inflammation and producing enzymes that degrade collagen. Conversely, a diet rich in antioxidants, adequate hydration, and a good skincare regimen with ingredients like retinoids and Vitamin C can synergize with the treatment, helping to preserve results for longer.
The skill of the practitioner and the injection technique used are technical factors that directly impact longevity. An experienced injector understands facial anatomy and will deposit the product at the correct depth in the dermis—where fibroblasts reside. Superficial injection leads to rapid breakdown and minimal effect, while injection that is too deep may not effectively reach the target cells. Furthermore, advanced techniques like micro-droplet injection or thread-like layering ensure even distribution and maximal surface area for the polynucleotides to work, leading to more effective and durable outcomes compared to bolus injections.
It's also helpful to compare the longevity of Rejuran to other common procedures. While hyaluronic acid fillers like Juvederm or Restylane primarily add volume and last 6-18 months depending on the product and area treated, their mechanism is different. They are biodegradable gels that physically fill space. Rejuran’s action is regenerative. Its effects are often more subtle but more comprehensive in terms of overall skin quality. Procedures like laser resurfacing offer more dramatic results for specific concerns like deep wrinkles but come with significant downtime, and their longevity (often several years) is achieved through a one-time, intense injury-and-repair process. Rejuran offers a low-downtime, gradual improvement that requires maintenance. The choice isn't about which is better, but which is better suited to your goals, lifestyle, and tolerance for downtime.
Managing expectations is part of the process. The "results" of Rejuran aren't like a switch that turns off at the 12-month mark. The degradation is gradual. You likely won't wake up on month 13 and see all your wrinkles returned. Instead, over time, you may notice your skin slowly reverting to its pre-treatment condition—perhaps becoming slightly less firm, a bit drier, or fine lines becoming more noticeable again. This gradual decline is why many patients choose to schedule maintenance sessions proactively, often around the 9-month mark, to maintain their skin at its peak condition rather than waiting for a full regression.
Determining the ideal maintenance schedule is a conversation to have with your qualified practitioner. They will assess your skin's response to the initial treatment, consider your aging rate, and discuss your lifestyle to recommend a personalized plan. This could be an annual "booster" or a session every 8-10 months. The goal of maintenance is not to start over but to sustain the healthier, more resilient skin environment that the initial treatments helped you achieve. The cumulative effect of consistent, well-timed treatments over years can lead to a significantly improved long-term baseline for your skin health, potentially slowing the visible aging process.