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Polynucleotide (PN): The Complete Guide to Regenerative Skin Healing

Written by: Her Clinic Doctor Team | Medically Reviewed by: Dr. Jeff Khor (LCP, MMC No. 66113)

If you’ve been keeping an eye on the world of aesthetic medicine lately, you’ve probably heard a lot of buzz about Polynucleotide (PN). It’s being hailed as the “future of skin health,” moving beyond simple hydration to actual cellular repair.

But what exactly is it, and why is everyone from dermatologists to biohackers talking about it? Let’s dive into everything you need to know about this revolutionary DNA-based biopolymer.


What Is Polynucleotide (PN)?

Polynucleotide (PN)

Definition of Polynucleotide

At its simplest, a Polynucleotide (PN) is a biological molecule composed of nucleotide monomers bonded in a long chain. In the context of skincare, PN refers to highly purified injectable gels derived from DNA that help “message” your cells to behave like younger versions of themselves.

Chemical and Biological Structure of PN

Chemically, PNs are chains of nucleotides. When injected into the skin, they act as a scaffold, providing a structural environment that encourages cells to grow and repair.

Polynucleotide as a DNA-Based Biopolymer

Unlike many synthetic treatments, PN is a DNA-based biopolymer. It is bio-compatible, meaning your body recognizes it and knows exactly how to use it to fuel regenerative processes.


Source and Origin of Polynucleotide (PN)

Natural Sources of Polynucleotide

While DNA exists in all living things, the most effective source for medical-grade PN has been found in the sea.

Salmon DNA–Derived Polynucleotides

Most high-quality PN treatments, such as Rejuran, are derived from Salmon DNA. Why salmon? Their DNA structure is incredibly similar to human DNA, which minimizes the risk of immune rejection while maximizing regenerative potential.

Purification and Processing Methods

The DNA goes through a rigorous purification process to remove proteins and lipids that could cause allergies, leaving behind only the pure, high-molecular-weight polynucleotides.


Mechanism of Action: How PN Works

How does a DNA fragment actually change your skin? It’s all about the Mechanism of Action.

  • Cellular Regeneration and Repair: PN provides the “building blocks” (nucleosides and nucleotides) that your cells need to repair damaged DNA.

  • Fibroblast Activation: It stimulates fibroblasts—the factory cells of your skin—to work harder.

  • Collagen and Elastin Stimulation: Increased fibroblast activity leads to a surge in Type I collagen and elastin production.

  • Anti-Inflammatory Effects: PN is known to scavenge free radicals and reduce inflammation, making it great for sensitive or rosacea-prone skin.

  • Skin Barrier Restoration: It strengthens the skin’s natural defenses, improving its ability to hold onto moisture.


The Benefits: Why Choose Polynucleotide (PN)?

The results of PN treatment aren’t just surface-level; they are structural.

  1. Skin Regeneration and Healing: Speeds up the recovery of damaged tissue.

  2. Improved Skin Elasticity and Firmness: Gives that “snap-back” quality to sagging skin.

  3. Enhancement of Skin Texture and Tone: Smooths out rough patches and refines pores.

  4. Deep Hydration: Unlike Hyaluronic Acid which pulls water, PN improves the skin’s internal ability to stay hydrated.

  5. Long-Term Quality Improvement: The more you do it, the better your “skin foundation” becomes.


Clinical Applications in Dermatology

Aesthetic and Anti-Aging

PN is a powerhouse for treating “crepy” skin under the eyes, fine lines around the mouth, and neck laxity. It’s often used as a preventive measure for patients in their 20s and 30s.

Scars and Damaged Skin

Because of its regenerative nature, PN is highly effective for treating acne scars and stretch marks by remodeling the scarred tissue.

Post-Procedure Recovery

Many practitioners use PN alongside lasers or microneedling to slash downtime and boost the final result.


Treatment Protocol: What to Expect

Methods of Administration

PN is typically administered via micro-injections (similar to mesotherapy) into the dermis.

Treatment Frequency

For optimal results, most clinics recommend:

  • Initial Phase: 3 to 4 sessions, spaced 2–4 weeks apart.

  • Maintenance: One session every 6 months.

Combination Therapy

PN plays well with others! It is frequently combined with Botox or dermal fillers to provide both structural lift and skin quality improvement.


Safety and Side Effects

Polynucleotide (PN) is remarkably safe due to its biocompatibility.

  • Common Side Effects: Minor redness, swelling, or small bumps (papules) at the injection site that usually disappear within 24–48 hours.

  • Contraindications: People with known seafood allergies should consult their doctor first, though the purification process usually removes the allergenic proteins.


Scientific Evidence

Research published in the Journal of Cosmetic Dermatology has consistently shown that PN increases epidermal thickness and improves hydration levels. It is a staple in Regenerative Medicine, a field focused on repairing rather than just masking the signs of aging.


Aftercare and Recovery

After your treatment, keep it simple:

  • Avoid heavy exercise for 24 hours.

  • Don’t apply makeup for at least 12 hours.

  • Stay hydrated and use a gentle broad-spectrum sunscreen.


People Also Ask (PAA FAQs)

1. Is Polynucleotide the same as DNA? PN is a fragment of DNA. Think of it as the “instructions” and “materials” your skin needs to repair itself.

2. Is PN a filler or a skin booster? Neither! Fillers add volume (like a cushion), and skin boosters provide hydration. PN is a biostimulator that repairs the skin at a cellular level.

3. Can I get PN if I have sensitive skin? Yes! Because of its anti-inflammatory properties, it is often recommended for people with sensitive skin or conditions like rosacea.

4. When will I see results? While some see a “glow” in a few days, the real structural changes usually appear 2–4 weeks after the second session.

5. How long do the effects of Polynucleotide last? Results typically last 6 to 12 months, depending on your lifestyle and skin condition.


Conclusion: The Role of PN in Modern Skincare

Polynucleotide (PN) is shifting the conversation from “filling” the skin to “healing” the skin. By harnessing the power of salmon DNA, we can now kickstart our body’s own regenerative engines to achieve skin that isn’t just younger-looking, but actually healthier.

Experience the power of Polynucleotide (PN) at Her Clinic Malaysia. Our premium Rejuran treatments stimulate cellular repair and collagen for youthful, glowing, and healthy skin. Book now!

Medical Disclaimer: This content is for education only and does not replace medical advice. Under Ministry of Health Malaysia guidelines, all aesthetic treatments must be performed by LCP-certified doctors. Results vary for each person. Always consult a qualified medical professional, such as the team at Her Clinic, for proper diagnosis and a personalised treatment plan.

Prices listed are indicative. Please contact us for current promotions and actual pricing.

Dr. Jeff Khor
Dr. Jeff Khor
LCP-Certified Aesthetic Physician | MMC Reg: 66113

Dr. Jeff Khor is an LCP-certified aesthetic physician registered with the Malaysian Medical Council (MMC 66113). With over 10 years of experience, he specializes in non-surgical facial rejuvenation and advanced skin treatments. He practices under Ministry of Health Malaysia standards, focusing on safety, evidence-based care, and natural-looking results.