Polynucleotide Skin Repair · Dr Samantha Tay
How PN Healer Repairs Skin From the Dermal Layer Using Salmon DNA Polynucleotide
Most skin treatments work on the surface. PN Healer is a doctor-administered injection that delivers salmon DNA polynucleotide (PDRN) directly into the dermis, which is the deeper layer of skin where natural repair actually happens. Dr Samantha Tay performs the protocol at Nexus Aesthetic in Singapore.
Speak to Dr Samantha on WhatsApp
Dr Samantha Tay
Medical Director, Nexus Aesthetic
She personally administers every PN Healer injection at the clinic. Patients are not handed off to a nurse or junior doctor for the procedure.
What it is
What PN Healer Actually Is, in Plain Language
It is an injectable skin booster made of polynucleotide fragments extracted from purified salmon DNA. The salmon DNA is biocompatible with human skin tissue, which is why it has been studied for skin repair since the early 2000s. When the polynucleotide is injected into the dermis using a fine 30 to 32 gauge needle, PDRN signals fibroblast cells to start producing collagen and elastin again. This is the underlying scaffolding that keeps skin firm, elastic, and well hydrated.
Most skin treatments in Singapore work on the surface. Topical serums sit on the epidermis, hyaluronic acid fillers add volume above the skin layer, and lasers heat the surface to trigger a wound response. The polynucleotide injection is different because it is delivered into the dermal layer itself, where the actual collagen-producing cells live. The repair happens from the inside out instead of the outside in.
It is one variant in the family. The other variants are PN I (also written PN Eye, designed for the thin skin under the eyes), polynucleotide skin booster S (a higher-concentration formula for acne scars and stretch marks), and PN HB+ (combines polynucleotide with hyaluronic acid for added immediate hydration). This page covers the Healer variant. She will recommend which variant suits you at consultation.
Mechanism
How the Salmon DNA Polynucleotide Triggers Skin Repair From Within
Once the polynucleotide is injected into the dermis, the polynucleotide fragments work in three ways to restore skin from within. This is what sets it apart from surface treatments and from filler.
1. Collagen Production
PDRN signals fibroblast cells to produce new collagen and elastin. This rebuilds the structural scaffolding that keeps skin firm and tight as you age.
2. Cellular Repair
PDRN fragments support the regeneration of damaged skin cells, which improves skin texture and reduces the appearance of fine lines.
3. Hydration and Anti-Inflammation
The treatment improves the skin barrier function and has anti-inflammatory effects, which help reduce redness and visible irritation over the treatment course.
A treatment protocol at Nexus Aesthetic involves multiple shallow injections across the treatment area at each session. She typically maps the injection points to address your specific skin concerns rather than using a fixed pattern. The fragments slowly release over the following weeks, so you continue to see improvements after the session itself.
Who it suits
Who PN Healer Is Suitable For in Singapore
The protocol is designed for adults whose skin has started to lose its natural ability to repair itself, which usually begins in the late twenties and accelerates after thirty. She sees patients across a range of concerns, but It is most often the right choice for people in these categories:
- Skin that has begun to lose firmness or elasticity
- Visible fine lines around the eyes, mouth, and forehead
- Skin that feels dry or rough despite a good topical routine
- People who want a doctor-supervised alternative to filler
- Patients recovering from intensive laser or peel treatments
- Asian skin that is sensitive to inflammation or post-treatment redness
It is generally not suitable for people who have an active skin infection at the injection site, are pregnant or breastfeeding, have a known allergy to salmon or DNA-based products, or are on blood thinners without their doctor's clearance. She will run a clinical safety screening at consultation before recommending the protocol, so the treatment is only offered when it is safe for your skin profile.
Comparison
How PN Healer Compares to the Other polynucleotide skin booster Variants
Salmon DNA polynucleotide (PDRN) treatments in Singapore are sold under several brand names. Each variant has a different formulation and is designed for a different concern. The summary below helps you understand where the Healer variant sits in the family.
| Variant | Best For | Where It Is Used |
|---|---|---|
| PN Healer | Overall skin quality, elasticity, hydration, fine lines | Full face, neck, hands |
| PN I (Eye) | Thin under-eye skin, dark circles, fine lines | Under-eye area only |
| PN S | Acne scars, post-inflammatory texture, stretch marks | Localised scarred areas |
| PN HB+ | Same regenerative effect with immediate hydration boost | Full face, often combined with Healer |
First-time patients usually start with Healer because it is the all-purpose option. If you have a specific concern, She may suggest combining Healer with the Eye variant for the under-eye area, or with the S variant for scarring. The variants are complementary, not substitutes.
What to expect
What Happens During a Polynucleotide Injection Session at Nexus Aesthetic
A treatment session at Nexus Aesthetic typically takes around 45 minutes. Here is what each session looks like step by step.
- She reviews your skin concerns and confirms the injection map
- Topical numbing cream is applied for around 20 minutes to reduce discomfort
- Numbing cream is wiped off and the skin is cleansed for injection
- The polynucleotide is injected through a fine 30 to 32 gauge needle at multiple shallow points across the treatment area
- A cooling compress is applied immediately after to settle any redness
- You are given aftercare instructions and free to walk out the same day
Most patients describe the sensation as small pinpricks rather than sharp pain. Mild redness and small raised bumps at the injection sites are normal and typically settle within 24 to 48 hours. She will explain what is normal and what to watch for at the end of the session.
Benefits
The Skin Benefits Patients Notice After a Course of Polynucleotide Injections
Because the PDRN works on the dermal layer rather than the surface, the changes are gradual. Most patients begin to notice improvements after the second session, with the fullest results visible around four to eight weeks after completing the recommended course. The benefits she sees most often in clinic include:
- Improved skin elasticity and firmness across the face
- Smoother skin texture, especially in areas with fine lines
- Better hydration that lasts beyond the day of treatment
- Reduction in pore visibility over the treatment course
- Less visible redness for patients with sensitive or inflammation-prone skin
- Skin that responds better to other treatments such as laser or chemical peels
Results typically last between six and twelve months after the initial course. She usually recommends a maintenance session every six months to sustain the collagen response.
A note from your doctor
Why Dr Samantha Does Not Recommend needleless polynucleotide injection for Most Patients
A growing number of clinics in Singapore offer needleless polynucleotide treatment, where the polynucleotide is delivered through a microneedling device or pressure applicator instead of a fine injection. The marketing pitch is no needle, no downtime. She disagrees with this approach for most patients, and her reasoning is clinical rather than commercial.
Needleless delivery sits the polynucleotide on or near the surface of the skin. The active site for repair is the dermis, which is below the epidermis. The PDRN molecule is too large to reliably penetrate intact skin in the volumes required to trigger a meaningful collagen response. In her experience, patients who go through a full course of needleless treatment report softer initial hydration but rarely the structural firmness improvements that the injected protocol delivers over the same number of sessions.
Her recommendation is the traditional injection because the polynucleotide reaches the layer where it actually works. Patients who are needle-averse should raise it at consultation. She will discuss numbing protocols and whether the effort-versus-result tradeoff is worth it for your specific concern, rather than defaulting to the more comfortable but less effective option.
Treatment timeline
How Many PN Healer Sessions You Need and How Long Results Last
Dr Samantha recommends three to four polynucleotide injection sessions spaced four weeks apart for the initial course. This spacing gives your skin time to respond to each session before the next round, which is how the body builds collagen sustainably.
- Session 1: Establishes the polynucleotide reservoir in the dermis. Mild bumps for 1 to 2 days.
- Session 2 (week 4): First subtle improvements in skin texture and hydration.
- Session 3 (week 8): Visible improvement in firmness, fine lines, and skin tone.
- Session 4 (week 12): Full course completed. Continued improvement over the next 4 to 8 weeks.
- Maintenance: One session every 6 months to sustain the collagen response.
Some patients combine the protocol with other treatments at Nexus Aesthetic, such as Pico Laser for pigmentation or Profhilo for facial volume. She will sequence the treatments so they support rather than interfere with each other.
Side effects and recovery
The Side Effects of PN Healer and What to Expect During Recovery
The treatment is generally well tolerated, but every injection treatment has expected side effects. She goes through the full safety profile at consultation so you know what is normal and what is not. The common ones to expect:
- Small raised bumps at each injection point that settle within 24 to 48 hours
- Mild redness similar to a sunburn for a few hours after the session
- Slight tenderness at the injection sites for a day or two
- Pinpoint bruising in some patients, especially around the under-eye area
You can apply makeup the next day once the bumps have settled. Avoid intensive exercise, saunas, hot yoga, and swimming pools for the first 24 hours so the injection points heal cleanly. She provides written aftercare instructions at the session.
Rare reactions can include prolonged swelling, infection at the injection site, or an allergic response to the salmon DNA. She screens for known allergies at consultation. If any unusual symptoms develop after a session, contact the clinic via WhatsApp and the team will review.
Pricing
PN Healer Pricing at Nexus Aesthetic
PN Healer pricing in Singapore varies between clinics, doctors, and the polynucleotide variants used. The table below shows the general Singapore market range so you can size up the budget before consultation.
| polynucleotide variants | Singapore market range (per session) | Best for |
|---|---|---|
| PN Healer | SGD 450 to 900 | Full face skin quality, elasticity, fine lines |
| PN I (Eye) | SGD 400 to 900 | Thin under-eye skin, dark circles |
| PN S | SGD 450 to 950 | Acne scars, post-inflammatory texture |
| PN HB+ | SGD 450 to 950 | Same regenerative effect with immediate hydration |
The above is the general Singapore market range, not the price at Nexus Aesthetic. The Nexus price is shared upfront at consultation and depends on the area treated, the variant Dr Samantha recommends, and how many sessions are needed. No package lock-ins. No hidden fees.
Most patients budget for the full course rather than a single session. Three to four sessions spaced four weeks apart is the typical initial protocol, with a maintenance session every six months to sustain the collagen response. The total course cost is confirmed at consultation before any commitment.
Your doctor
Meet Dr Samantha Tay, the Doctor Performing Your Treatment
Dr Samantha Tay
Medical Director, Nexus Aesthetic
She completed her MBBS at the National University of Singapore and went on to four years of surgical training at KK Women's and Children's Hospital. She has been practising aesthetic medicine for over a decade and personally performs every injection at Nexus Aesthetic. She has been featured in The Straits Times and is known for her no-hardsell approach to consultation.
Common questions
Common Questions Singaporeans Ask About PN Healer Before Booking
Where can I get a PN Healer treatment in Singapore?
How much does PN Healer cost in Singapore?
What is polynucleotide injection and how is it different from a filler?
How long does PN Healer last?
How many PN Healer sessions are needed?
How much PN Healer is needed for the full face?
What is the difference between PN Healer and PN Eye?
Is PN Healer safe for sensitive skin?
Is 2 sessions of PN Healer enough?
Is PN Healer better than Botox?
Is polynucleotide skin booster really made from salmon sperm?
How many days does it take to recover from PN Healer?
How does PN Healer compare to Profhilo?
Arrange a Consultation With Dr Samantha
Find out whether the treatment is the right protocol for your skin. She personally reviews every consultation. WhatsApp the clinic and her team will arrange a time that suits you.
Speak to Dr Samantha on WhatsApp