Can Rejuran Improve Neck Wrinkles?

Neck wrinkles can become noticeable even when your facial skin still looks relatively smooth. Fine horizontal lines, crepey skin, and reduced elasticity may develop because of natural aging, sun exposure, repeated neck movement, and changes in the skin's supporting structure.

If you are considering Korean aesthetic treatments, Rejuran may be one option to discuss with a dermatologist. Rejuran contains polynucleotides (PN), which are used in aesthetic medicine to target skin-quality concerns.

Rejuran may help improve selected aspects of neck skin quality, but there is limited clinical evidence proving that it reliably reduces neck wrinkles specifically. It is not a guaranteed solution for deep horizontal lines, significant skin laxity, or prominent neck bands. The right treatment depends on the type and severity of your wrinkles.

Why Do Neck Wrinkles Develop?

The neck ages differently from some areas of the face. Its skin has different structural characteristics, moves frequently, and is often exposed to sunlight without adequate protection.

Several factors can contribute to visible neck wrinkles.

1. Natural collagen and elastin changes

Collagen helps provide structural support, while elastin contributes to flexibility. As these components change with age, the skin may become less firm and fine lines may become more noticeable.

2. Repeated neck movement

Looking down at a phone, reading, and moving your head throughout the day create repeated folds in the neck. These movements are normal, but persistent horizontal creases can become more visible over time.

3. Sun damage

Cumulative ultraviolet exposure contributes to wrinkles, uneven pigmentation, and changes in skin texture. The neck is frequently exposed to sunlight but may receive less sunscreen than the face.

4. Dehydration and skin texture changes

Dehydrated skin may make existing lines appear more pronounced. Improving hydration can help the skin look smoother, although hydration alone will not reverse deeper structural wrinkles.

5. Skin laxity and muscle bands

Loose skin and prominent vertical platysmal bands are different from superficial horizontal lines. A treatment designed to improve skin quality may have limited effects on these deeper structural concerns.

Understanding which problem you have is the first step toward choosing an appropriate treatment.

1. What Is Rejuran, and How Might It Help the Neck?

Rejuran is a polynucleotide-based injectable treatment used in aesthetic medicine. Polynucleotides are intended to support skin-quality improvement, and treatments in this category are used for concerns such as fine lines, texture, and elasticity.

A dermatologist may consider Rejuran for selected neck concerns when the main goal is gradual improvement in the appearance of the skin.

Potential reasons to discuss it include:

• Fine surface lines.
• Rough or uneven skin texture.
• Early signs of reduced elasticity.
• Crepey-looking skin associated with age-related changes.

However, the evidence supporting polynucleotide injections is not equally strong for every body area. A systematic review of nine studies involving 219 patients found promising results for wrinkles, texture, and elasticity, but the studies were generally of low or moderate quality and used varying treatment methods.

These findings support further research rather than a guarantee that Rejuran will correct neck wrinkles. Evidence from facial treatments also cannot automatically be applied to the neck. <Cite refs={["turn797176search11","turn797176search5"]}/>

2. Which Types of Neck Wrinkles Might Respond?

Rejuran is not equally suitable for every type of neck aging.

Fine horizontal lines

Fine horizontal lines may be associated with repeated movement, skin dehydration, and gradual changes in elasticity. If the lines are relatively superficial, a dermatologist may discuss a skin-quality treatment such as Rejuran.

However, there is insufficient evidence to predict how much improvement Rejuran will provide for horizontal neck lines specifically.

Crepey neck skin

Crepey skin looks thin, finely wrinkled, or crumpled. It may be associated with dryness, sun damage, and age-related changes in the skin.

Rejuran may be considered in selected cases, but the treatment cannot guarantee increased skin thickness or substantial tightening. Daily moisturization and sun protection remain important, and more pronounced skin damage may require a different approach.

Deep horizontal neck creases

Deep, established neck folds are more difficult to treat than fine surface lines. Depending on their depth and cause, a dermatologist may discuss selected hyaluronic acid-based injectables or other procedures.

A skin booster alone may not sufficiently improve deep creases, and no single injectable is appropriate for every neck.

Vertical neck bands

Vertical bands can become visible when the platysma muscle contracts or becomes more prominent. Rejuran is not designed to directly relax this muscle.

If vertical bands are your main concern, ask your dermatologist whether a muscle-targeting treatment or another approach is more suitable.

3. Is Rejuran the Best Korean Treatment for Neck Wrinkles?

Not necessarily. Several treatment categories may be considered, depending on the concern.

Rejuran

Rejuran may be discussed for selected skin-quality concerns, such as fine lines and texture. However, direct evidence for neck-specific wrinkle reduction remains limited.

Hyaluronic acid skin boosters

Certain injectable hyaluronic acid formulations have been studied for horizontal neck wrinkles. A randomized, multicenter clinical trial published in 2026 evaluated two non-cross-linked hyaluronic acid composite solutions in 188 participants. Both groups received three treatments at four-week intervals, and the treatments showed improvement on the study's neck-wrinkle assessment scale.

This supports the potential role of certain HA-based injectable treatments, but the results cannot be assumed to apply to every product marketed as a skin booster. <Cite refs={["turn797176search4"]}/>

Hyaluronic acid fillers

Some cross-linked HA gels are designed to provide more structural support than non-cross-linked skin boosters. Clinical research has evaluated their use for moderate-to-severe horizontal neck lines.

These products are not interchangeable with Rejuran or lighter HA formulations. Their suitability depends on the neck's anatomy, the depth of the lines, and the clinician's expertise. Injectable fillers also carry risks that require careful assessment. <Cite refs={["turn797176search2","turn797176search8"]}/>

Energy-based treatments

Certain laser, radiofrequency, or ultrasound-based procedures may be considered for selected cases involving texture or skin laxity. The likely benefit depends on the device, treatment settings, skin type, and severity of the concern.

These procedures do not guarantee the removal of deep wrinkles, and each has its own recovery requirements and potential complications.

The best treatment is the one that matches your particular problem, not necessarily the newest or most popular option.

4. How Many Rejuran Sessions Might You Need?

The number of treatments depends on the product formulation, treatment area, skin condition, and clinician's protocol.

Some injectable skin-quality treatments are administered as a series of sessions rather than a single procedure. However, there is no universally established Rejuran schedule that guarantees improvement in neck wrinkles.

During your consultation, ask:

• How many sessions are being recommended, and why?
• What improvement is realistic for my neck?
• How long might it take to assess the result?
• Will maintenance treatments be suggested?
• Is there stronger evidence for another treatment for my particular wrinkles?

Be cautious of promises that a fixed number of sessions will completely remove neck lines. Individual responses vary, and long-term results are not fully established for every protocol.

5. Is Rejuran Safe for the Neck?

Rejuran involves injections, so it can cause temporary discomfort and local reactions. Possible side effects include redness, swelling, bruising, tenderness, and small bumps at injection sites.

Infection, persistent lumps, inflammatory reactions, and other more serious complications are also possible with injectable procedures.

The neck has important anatomical structures, and injections should be performed by a qualified medical professional with appropriate anatomical knowledge. Your provider should review your medical history, previous treatments, allergies, and any factors that could affect healing.

Before treatment, ask about the exact product being used, its suitability for the neck, expected recovery, and how to obtain medical assistance if a complication occurs.

If you are traveling to Seoul, plan for recovery time and arrange clear aftercare instructions before leaving Korea.

6. Can Skincare Help Prevent Neck Wrinkles?

Skincare cannot eliminate every established wrinkle, but it can help protect the skin and reduce factors that contribute to visible aging.

Use sunscreen on your neck

Apply broad-spectrum sunscreen to the neck and exposed upper chest every day. Reapply as directed, particularly during prolonged outdoor exposure.

Moisturize consistently

A moisturizer can help reduce dehydration and make fine surface lines look less prominent. Choose a formula that your skin tolerates comfortably.

Consider appropriate anti-aging skincare

A topical retinoid may help improve signs of photoaging over time, but it can cause irritation and is not suitable for everyone. Discuss its use with a qualified healthcare professional, especially if your neck is sensitive.

Avoid unnecessary irritation

Strong exfoliants, fragranced products, or aggressive routines may irritate delicate neck skin. Introduce active ingredients gradually and stop using products that cause persistent burning or inflammation.

These measures are useful whether or not you choose an injectable treatment.

Conclusion: Can Rejuran Improve Neck Wrinkles?

Rejuran may be worth discussing if you have fine neck lines, uneven texture, or early changes in skin quality. However, evidence specifically demonstrating its effectiveness for neck wrinkles remains limited, and results cannot be guaranteed.

Hyaluronic acid-based treatments and selected energy-based procedures may be more appropriate for certain types of horizontal lines, texture changes, or skin laxity. Deep creases and vertical muscle bands often require a different treatment strategy.

Before choosing a procedure in Korea, have a qualified dermatologist assess the cause of your neck wrinkles and explain the expected benefits, limitations, risks, and alternatives. A realistic treatment plan combined with daily sun protection and consistent skincare is a more reliable starting point than choosing a product based on popularity alone.

Frequently Asked Questions

1. Does Rejuran work on neck wrinkles?

Rejuran may help improve selected skin-quality concerns, but strong evidence specifically demonstrating neck-wrinkle reduction is limited. Results depend on the condition of the skin and the treatment protocol.

2. Is Rejuran better than hyaluronic acid for neck lines?

There is not enough direct comparative evidence to say that Rejuran is consistently better. Certain HA-based injectable treatments have been studied specifically for neck wrinkles, so the most appropriate choice depends on the depth and cause of the lines.

3. Can Rejuran remove deep horizontal neck lines?

It should not be expected to remove deep, established folds. A dermatologist may discuss other options, including selected HA-based injectables, depending on the anatomy and severity of the wrinkles.

4. How many Rejuran treatments are needed for the neck?

There is no universally established treatment schedule for neck wrinkles. The number of sessions depends on the formulation, treatment area, and individual assessment. Ask your clinician to explain the proposed schedule and the evidence supporting it.

5. Can Rejuran tighten loose neck skin?

Rejuran is primarily used for skin-quality concerns and should not be considered a guaranteed skin-tightening treatment. More significant laxity may require a different approach.

6. What is the best way to prevent further neck wrinkles?

Daily broad-spectrum sunscreen, regular moisturizing, gentle skincare, and avoiding excessive sun exposure can help protect the neck. These habits do not eliminate existing wrinkles but may help limit additional photoaging.