How Do Polynucleotides Work? Skin Regeneration Explained

What Are Polynucleotides?

Polynucleotides are long chains made from smaller units called nucleotides. These molecules are naturally involved in important processes in the body, including cell growth, repair and communication.

For aesthetic treatments, polynucleotides are injectable treatments that may help support fibroblast activity, collagen production, hydration and tissue repair.

Many injectable polynucleotide products use highly purified DNA fragments from salmon or trout. The material is processed to remove unwanted proteins and other substances that could cause unwanted reactions. The exact ingredients, concentration and manufacturing process can vary between products.

Related read: Polynucleotides London

 

Why are polynucleotides becoming so popular?

Aesthetic treatments are no longer just about adding volume or relaxing facial muscles. More people are looking for treatments that focus on skin health and create a more natural-looking result.

This has increased interest in regenerative treatments like:

• Polynucleotide injections
• Skin boosters
• Collagen stimulating treatments
• Platelet-rich plasma
• Energy-based skin rejuvenation

Polynucleotides fit into this wider trend. Rather than changing your facial structure, they .0 the way your skin looks and feels.

Related read: What Are Polynucleotides? Definition, Uses & Benefits

 

Structure of Polynucleotides Explained

Understanding what a polynucleotide is can make the science behind the treatment much easier to follow.

 

Nucleotides: The building blocks

A nucleotide has three basic parts:

• A sugar molecule
• A phosphate group
• A nitrogen-containing base

In DNA, the four bases are adenine, thymine, cytosine and guanine. RNA uses uracil instead of thymine.

You can think of each nucleotide as a small building block. When many of these blocks join together, they create a much longer chain called a polynucleotide.

 

Polynucleotide formation

Nucleotides are connected by chemical links called phosphodiester bonds. These bonds allow the individual units to form a long chain.

In the body, cells naturally produce polynucleotide chains as part of everyday biological processes. DNA needs to be copied when cells divide, while RNA is produced to help cells make proteins and respond to signals.

Injectable aesthetic products are prepared differently. The material derived from DNA is processed and purified in a controlled environment before being formulated for injection.

The exact structure and concentration can vary between products. This is one reason different formulations may be recommended for different areas, such as the face, neck or delicate skin around the eyes.

 

How Do Polynucleotides Work in the Skin?

Polynucleotides use several biological processes that contribute to the overall skin improvement.

 

Fibroblast stimulation and collagen production

Fibroblasts are cells in the dermis that produce collagen, elastin and other materials that support the skin.

As we age, fibroblast activity and production of collagen can slow down that may lead to fine lines, reduced firmness and thinner-looking skin.

 

Polynucleotides may help stimulate fibroblast activity and support collagen production. This is one of the key differences between polynucleotides and traditional dermal fillers.

 

Supporting skin repair

Polynucleotides are being studied for their potential role in supporting tissue repair and cell activity. Their components can be broken down into smaller nucleotides and nucleosides, which cells may reuse through a process known as the salvage pathway.

However, not all studies are from human aesthetic treatments. Some studies are laboratory, animal or wound- healing research, so results should be interpreted carefully.

 

Hydration and skin barrier support

Polynucleotides have water-binding properties and may help improve skin hydration. This can leave the skin looking smoother, softer and more supple.

For some people, improved hydration and a fresher-looking glow may be noticeable before the slower collagen-related changes appear.

 

Inflammation and oxidative stress

Inflammation and oxidative stress can contribute to skin ageing, collagen breakdown and reduced skin resilience.

Polynucleotide-based materials are being studied for potentially supporting tissue repair and a balanced inflammatory response. Research into PDRN, for example, has explored pathways involving adenosine A2A receptors, which are linked to inflammation and tissue regeneration.

Related read: Do Polynucleotides Work for Skin Rejuvenation?

 

Polynucleotides vs DNA and RNA: What Is the Difference?

The terms DNA, RNA and polynucleotides can sound very technical, but the basic difference is quite simple.

Molecule	Main Role
DNA	Stores the body’s genetic information
RNA	Helps read and use genetic information
Polynucleotides	Chains made from nucleotide units
Injectable polynucleotides	Purified materials used to support skin and tissue processes

 

What does genetic information storage mean?

Genetic information storage is mainly a description of what DNA does inside your cells.

DNA stores the instructions your cells need to carry out their normal functions. Although some injectable polynucleotides are DNA-derived, the treatment is not designed to change this information.

Polynucleotide injections are not gene therapy and do not permanently change your genes.

 

 

Polynucleotide Synthesis

Polynucleotide synthesis can mean either how cells naturally make nucleotide chains or how polynucleotide materials are prepared for medical and laboratory use.

 

How cells make polynucleotides

Your cells naturally make nucleotides and polynucleotide chains for important jobs, such as:

• Copying DNA when cells divide
• Repairing damaged DNA
• Making RNA
• Responding to signals from the body

These processes are controlled by enzymes and other cellular systems. They are different from how injectable polynucleotide products are manufactured.

 

How polynucleotides are prepared for treatment

Before a polynucleotide product is used in a clinic, it goes through controlled processing and purification. Unwanted proteins, cell debris and other impurities are removed, and the final product is tested to meet quality and safety requirements.

It is also important to remember that polynucleotide treatment does not create new genetic material inside your skin. The injectable material is prepared before treatment and then placed into the skin.

 

RNA Interference Technology

RNA interference (RNAi) is a different area of nucleic acid science. It is not the same as standard polynucleotide injections.

 

What is RNA interference?

RNAi is a natural process that can reduce the activity of specific genes.

In simple terms:

• DNA contains genetic instructions
• Messenger RNA carries these instructions to the cell
• Small RNA molecules can target specific messages
• The cell then produces less of the related protein

This is known as gene silencing.

Is RNA interference used in polynucleotide treatments?

No. RNA interference is not the standard mechanism behind injectable polynucleotide treatments.

The two are sometimes discussed together because both involve nucleic acids and cellular processes. RNAi is being researched for potential medical uses, including ways of influencing inflammation, pigmentation and collagen breakdown.

 

How Long Do Polynucleotides Take to Work?

It is important to understand that polynucleotides are not usually an instant-result treatment.

If you are considering treatment, it helps to think in terms of gradual skin improvement rather than an immediate transformation.

 

Typical timeline

Timeline	What You May Notice
First few days	Redness, swelling, tenderness or small injection marks may occur
1 to 2 weeks	Early hydration and a fresher appearance may become noticeable
3 to 6 weeks	Gradual changes in texture and elasticity may develop
8 to 12 weeks	More developed collagen related improvements may become apparent

Some may notice improved hydration relatively early. Changes linked to collagen production tend to take longer because collagen formation and tissue remodelling are naturally slow processes.

 

What can affect your results?

Your results can be influenced by:

• Your age
• Natural collagen production
• Previous sun exposure
• Existing sun damage
• Skin thickness and condition
• The area being treated
• The number of treatment sessions
• The interval between sessions
• Lifestyle factors like smoking and sleep
• Your skin care routine and use of daily SPF

 

Benefits of Polynucleotide Treatments

Potential benefits of polynucleotides may include:

• Smoother-looking skin
• More hydrated skin
• A fresher complexion
• More elastic skin
• Softer looking lines
• Improvement in skin texture
• under-eye rejuvenation
• Support for the appearance of acne scarring
• A more rested and healthy-looking complexion

The main appeal for many patients is the subtle nature of the results, and aim to make the skin look healthier.

Related read: Understanding The Benefits Of Polynucleotides and Hyaluronic Acid In Skin Rejuvenation

 

Are Polynucleotides Safe?

Polynucleotides are generally considered biocompatible and are usually well tolerated when administered properly.

But with any injectable treatment, the following side effects can happen:

• Redness
• Swelling
• Tenderness
• Itching
• Bruising
• Small injection marks

For your safety, it is important to choose a qualified medical practitioner working in an appropriate clinical setting.

 

Who is an Ideal Candidate for Polynucleotides?

Polynucleotides may be suitable if you are concerned about:

• Early signs of skin ageing
• Fine lines
• Dull or tired-looking skin
• Dehydration
• Reduced elasticity
• Crepey texture
• Mild acne scarring
• Delicate under eye skin
• sun-damaged skin
• Skin that appears thinner or less resilient
• A preference for regenerative treatment instead of traditional fillers

The best option depends on your skin, facial anatomy and what you want to achieve.

 

Polynucleotides vs Other Treatments

Treatment	Main Purpose	Typical results
Polynucleotides	Support regeneration and skin quality	Progressive improvement in texture, hydration and resilience
Dermal fillers	Restore volume and facial structure	Contouring, support or wrinkle correction
Skin boosters	Improve hydration and texture	Fresher, smoother-looking skin
Profhilo	Improve hydration and firmness	Skin remodelling and hydration

Related read: Polynucleotides vs Profhilo: What is Right for Me?

 

Conclusion

Polynucleotides are part of a growing move towards regenerative aesthetics. Rather than simply adding volume or relaxing muscles, they aim to support the skin’s natural repair and renewal.

They may help improve hydration, collagen production, skin texture and firmness over time.

The key is to expect gradual, natural-looking results rather than an instant change like you might see with a dermal filler.

If you are considering a treatment, a consultation with an experienced medical practitioner can help you decide which treatment is most suitable for you.