Regenerative injectables are reshaping aesthetic medicine. Rather than focusing solely on replacing volume or relaxing muscle activity, the emphasis is shifting towards biological stimulation, dermal repair and long-term tissue optimisation.
Polynucleotides — and specifically Plinest® — sit firmly within this regenerative category.
Below is a detailed clinical guide addressing the most common questions patients ask, supported by current scientific understanding and published evidence.
What Are PolyNucleotides
Polynucleotides are highly purified fragments of DNA, typically derived through advanced purification processes to ensure biocompatibility and safety.
In aesthetic medicine, they function as biostimulatory agents. Once injected intradermally, they:
- Stimulate fibroblast proliferation
- Enhance collagen type I production
- Support elastin synthesis
- Improve dermal hydration
- Contribute to extracellular matrix repair
Their mechanism is regenerative rather than volumising.
Unlike hyaluronic acid fillers, polynucleotides do not occupy space or create contour. Instead, they act at a cellular level to improve tissue quality over time.
What Is Plinest®?
Plinest® is a polynucleotide injectable produced using PN-HPT® (Polynucleotide High Purification Technology).
The significance of this lies in its purification process. The PN-HPT® method removes proteins and impurities, reducing inflammatory potential and enhancing biocompatibility.
Plinest® is manufactured by Mastelli, a pharmaceutical company with decades of experience in polynucleotide-based medical products used in orthopaedics, wound healing and regenerative medicine before aesthetic adaptation.
The clinical objective of Plinest® is:
- Tissue repair
- Dermal remodelling
- Improved elasticity
- Enhanced skin resilience
How Do Polynucleotides Work at a Cellular Level?
Polynucleotides exert their effect through multiple mechanisms:
a) Fibroblast Activation
They stimulate fibroblast activity, leading to increased collagen synthesis and dermal thickening.
b) Antioxidant Activity
Polynucleotides can bind free radicals, reducing oxidative stress — a key contributor to skin ageing.
c) Hydrophilic Properties
They attract and bind water molecules, improving dermal hydration without adding bulk.
d) Tissue Repair Signalling
They act as biological signalling molecules that support wound-healing pathways and extracellular matrix repair.
This multi-layered action explains why improvements are gradual and progressive.
How Is Plinest® Different from Dermal Fillers?
The distinction is fundamental.
Dermal fillers:
- Add immediate volume
- Restore contour
- Replace structural loss
Plinest® and polynucleotides:
- Do not volumise
- Do not create lift
- Improve skin quality and biological function
Fillers are structural tools.
Polynucleotides are regenerative tools.
In many modern treatment plans, they are used together — not interchangeably.
Which Areas Can Be Treated?
Polynucleotide treatments are particularly suited to areas where skin quality is the primary concern:
- Tear trough / under-eye region
- Perioral fine lines
- Neck
- Décolletage
- Lower face skin laxity
- Thin, crepey skin
They are especially useful in patients where filler would be inappropriate or excessive.
How Many Sessions Are Required?
Most protocols involve:
- 2–3 sessions
- Spaced 2–4 weeks apart
The number depends on:
- Age
- Baseline skin condition
- Degree of laxity
- Treatment goals
Because this is regenerative medicine, cumulative improvement occurs over time.
When Will I See Results?
Patients often report:
- Early hydration improvements within 2–3 weeks
- Progressive textural refinement over 6–12 weeks
- Ongoing collagen remodelling beyond the final session
This is not an instant transformation. It is gradual and biologically driven.
How Long Do Results Last?
Longevity varies, but improvements typically persist for several months.
Maintenance treatments are often advised every 4–6 months, depending on skin ageing rate and environmental factors.
Because polynucleotides stimulate biological repair rather than creating temporary volume, outcomes often appear natural and integrate well into long-term aesthetic plans.
Is Plinest® Safe?
When administered by a medically trained practitioner, polynucleotides have a favourable safety profile.
Common temporary effects may include:
- Mild swelling
- Redness
- Injection-site tenderness
These typically resolve within a few days.
The purification process used in Plinest® reduces protein contaminants that could otherwise increase inflammatory response.
As with all injectables, correct anatomical technique and patient selection are critical.
Can Polynucleotides Be Combined with Other Treatments?
Yes — and in many cases, they should be.
Polynucleotides are frequently combined with:
- Botulinum toxin
- Hyaluronic acid fillers
- Microneedling
- Radiofrequency devices
- Laser treatments
- Surgical procedures (as pre-conditioning or recovery support)
Optimising skin quality before volumising or energy-based treatments often enhances overall outcomes.
Who Is an Ideal Candidate for Plinest®?
Plinest® may be appropriate for patients who:
- Prefer subtle, regenerative outcomes
- Have thin or delicate skin
- Are concerned about under-eye quality
- Show early signs of ageing
- Wish to improve texture rather than volume
A full medical consultation is essential to determine suitability.
Clinical Perspective
The move towards regenerative injectables represents a shift in philosophy within aesthetic medicine. Rather than chasing correction alone, we now prioritise tissue health, dermal integrity and sustainable outcomes.
Plinest® and polynucleotide treatments do not replace fillers or surgery. They enhance the biological foundation upon which all aesthetic results depend.
For patients seeking natural, progressive improvement in skin quality — particularly in delicate areas such as the under-eyes — polynucleotides provide a clinically grounded, evidence-supported option.
