.

Smile lines can become more noticeable gradually, especially as collagen and elastin production declines and the cheeks lose some of their youthful support. Repeated facial expressions, genetics, bone structure, and cumulative sun exposure can also shape how deeply nasolabial folds appear.

Results depend on the area’s anatomy, the condition of the skin, and the treatment approach. A trained professional can adjust the technique for delicate perioral tissue and determine whether traditional microneedling, RF technology, or a structured combination is most appropriate. First, it helps to understand why these folds develop and why they may respond differently from other signs of aging.

What Causes Nasolabial Folds and Smile Lines?

Smile lines are the creases that extend from the sides of the nose toward the corners of the mouth. Their clinical name is nasolabial folds. Everyone has some degree of this natural facial contour. But the folds can become more noticeable when the skin loses structural support and no longer drapes as smoothly over the underlying tissues.

Collagen and elastin decline with age

Collagen helps give skin strength and density, while elastin supports its ability to stretch and return to place. As we age, production of both proteins decreases, contributing to thinner, less resilient skin and reduced plumpness. This gradual change is one reason nasolabial folds may appear deeper over time. Research and clinical commentary on smile lines also identify collagen and elastin decline as important contributors.

Volume loss changes the shape of the cheeks

The cheeks provide much of the soft-tissue support above the nasolabial area. With age, volume can diminish or shift, allowing the skin and cheek tissue to settle toward the lower face. That change can make an existing fold look more pronounced, even when the skin itself has not changed dramatically. Nasolabial folds become more visible through a combination of aging, tissue changes, and collagen breakdown, rather than one isolated cause.

Sun exposure, genetics, and facial movement also matter

Ultraviolet exposure can accelerate visible skin aging by contributing to collagen breakdown. Genetics and bone structure influence facial proportions, tissue distribution, and the way a person naturally develops folds. Repeated expressions, including smiling and laughing, repeatedly crease the same area. These movements do not cause a problem by themselves, but over many years, less elastic skin may recover less completely after each expression.

For that reason, smile-line severity varies widely between individuals. A professional assessment can distinguish whether the primary concern is skin texture, reduced support, facial structure, or a combination of factors. That evaluation helps determine whether a collagen-focused option such as Corrective Microneedling™ is an appropriate part of the treatment plan.

How Microneedling for Smile Lines Works to Restore Collagen

Microneedling uses controlled micro-injuries to activate the skin’s natural repair response. As the skin repairs those tiny channels, it can increase collagen and elastin production, helping fine lines look smoother and the surrounding tissue appear more supported. This collagen-induction approach is why professional Corrective Microneedling™ can address the appearance of smile lines without adding volume to the fold. Research on microneedle patches has also reported improvement in the appearance of nasolabial folds, including when used with hyaluronic acid.

Collagen induction in the perioral area

The skin around the mouth is constantly involved in speaking, smiling, and other facial movement. A professional provider can treat the fold and adjacent skin with a deliberate pattern, creating even microchannels while adapting technique to the tissue’s sensitivity. These channels also create pathways that can support the controlled delivery of topical products selected for the treatment plan. The goal is not to abrade the surface, but to stimulate a measured healing response that supports gradual improvement over a series of treatments.

Because smile lines have different depths and patterns from one side of the face to the other, treatment should be individualized rather than applied with a fixed setting. MDPen’s technology creates approximately 217,000 to 324,000 microchannels per minute, supporting efficient, consistent coverage. Its adjustable depth range of 0.1 mm to 2.5 mm allows a trained professional to select an appropriate setting for each facial zone. See the available professional microneedling devices for more detail on the platform.

Why depth and professional technique matter

The perioral and nasolabial areas require precision. A typical treatment depth may fall around 0.5 to 1.5 mm, but the correct setting depends on skin thickness. The location and severity of the lines, the treatment objective, and the provider’s assessment. More depth is not automatically better. A qualified professional can vary the depth, speed, pressure, and passes across delicate tissue while maintaining appropriate sanitation and documenting the plan.

At-home devices generally offer less control over these variables and are not designed to reproduce a customized professional protocol. They may be useful for limited cosmetic maintenance when used exactly as directed, but they cannot replace an assessment, calibrated treatment, or clinical oversight for pronounced smile lines. Professional care also helps determine whether collagen induction is appropriate on its own or should be considered alongside another modality. MDPen’s Corrective Microneedling approach keeps the emphasis on controlled treatment and progressive skin remodeling, rather than aggressive settings or promises of instant correction.

Sources: PubMed research on microneedle patches and nasolabial folds; overview of collagen induction for smile lines.

RF Microneedling vs. Traditional Microneedling for Smile Lines

Both approaches use controlled treatment to encourage firmer, smoother-looking skin, but they work at different levels. Traditional microneedling creates precise micro-punctures that activate the skin’s natural repair response and support new collagen formation. RF microneedling adds radiofrequency energy through the needles, creating controlled heat below the surface for thermal remodeling and additional tightening.

When traditional microneedling makes sense

Traditional microneedling can be a practical choice when the primary goal is to refine surface texture and soften fine lines around the mouth. It provides controlled stimulation without adding radiofrequency heat, which may be useful for patients whose concerns are mainly superficial or who need a more gradual treatment plan. A qualified provider can adjust the technique for the delicate skin around the nasolabial folds rather than treating every area with the same settings.

When RF may offer an advantage

RF microneedling may be better suited to more established folds, especially when reduced firmness contributes to their appearance. The combination of needle-based collagen induction and heat-based remodeling addresses both the skin surface and deeper supportive tissue. It is not a substitute for an individualized assessment, and deeper treatment is not automatically better. The provider should determine whether the expected benefit justifies the added energy for the patient’s skin, anatomy, and goals.

Some treatment plans use both modalities over time, or pair a tightening-focused session with traditional microneedling for texture. Professional Corrective Microneedling is designed to improve fine lines and wrinkles, including those around the mouth and smile lines, by building collagen through controlled injury and the body’s natural healing response. The right sequence depends on the depth of the folds, skin condition, and response to prior treatments.

The Corrective Microneedling Protocol for Treating Nasolabial Folds

MDPen’s proprietary Corrective Microneedling protocol is designed to improve the appearance of fine lines and wrinkles, including nasolabial folds around the mouth. Rather than treating smile lines as a surface concern alone, the protocol uses controlled micro-injury to support the skin’s natural repair response and gradual collagen remodeling.

1. Plan a series of professional treatments

   A typical course includes 3 to 6 sessions, scheduled approximately 4 weeks apart. This spacing gives the skin time to move through its repair cycle before the next treatment. The exact number of sessions and treatment approach should be determined by a qualified professional after evaluating skin condition, wrinkle depth, sensitivity, and the surrounding perioral tissue. A series-based plan is important because collagen remodeling develops progressively rather than appearing immediately after one appointment.

2. Days 1-3: Inflammatory phase

   Immediately after treatment, the skin enters the inflammatory phase. Controlled microchannels initiate the body’s natural healing response, and temporary redness, warmth, or sensitivity may occur. This early response is part of the treatment process, not the final result. Follow the provider’s instructions during these first days and avoid adding unapproved active products while the skin barrier is recovering.

3. Days 4-14: Proliferation phase

   During the proliferation phase, the skin begins producing new structural components as it repairs the treated area. The surface may look calmer, while the deeper remodeling process continues. Fine lines can begin to appear softer as the tissue strengthens, but results will vary based on age, skin health, lifestyle, and the starting depth of the folds. One session should be viewed as a step in the series, not a complete endpoint.

4. Days 15-180: Remodeling phase

   The remodeling phase extends from approximately day 15 through day 180. During this period, newly formed collagen continues to organize and mature. This is why the expected results timeline is measured in weeks and months. With a complete treatment plan, patients may see a gradual improvement in the appearance of nasolabial folds and other fine lines. While the provider monitors progress and adjusts the next session as needed.

Corrective Microneedling is specifically designed to address smile lines through a structured, professional approach. A consultation can determine whether traditional microneedling, RF microneedling, or a broader corrective plan is appropriate for your skin.

What to Expect During Treatment and Recovery

During the appointment

A professional microneedling appointment begins with a consultation and skin assessment. Your provider reviews your concerns, checks the condition of the skin around the mouth, and selects an appropriate treatment approach. A topical numbing product may be applied before treatment to improve comfort, especially in the delicate perioral area.

Once the skin is prepared, the provider passes a sterile microneedling device over the treatment area in a controlled pattern. The device creates precise microchannels that stimulate the skin’s natural repair response. Your provider adjusts the technique based on skin sensitivity, treatment goals, and the location of the smile lines rather than using the same settings for every face. MDPen’s Corrective Microneedling approach is designed to improve the appearance of fine lines and wrinkles, including lines around the mouth and smile lines.

After treatment, the skin may look flushed and feel warm or tight. Your provider typically applies a suitable post-treatment product and reviews your home-care instructions before you leave.

Recovery timeline and aftercare

Redness, sensitivity, and warmth are common after professional microneedling and may last approximately 24 to 72 hours. Individual recovery varies, so follow the specific instructions from your provider and avoid picking, rubbing, or exfoliating the treated area while it settles. You can review this microneedling aftercare guide for additional guidance on managing the post-treatment period.

• Cleanse gently: Use a mild cleanser and lukewarm water. Pat the skin dry instead of rubbing it.
• Hydrate strategically: Apply the products recommended by your provider. Nourishing post-treatment skincare serums can support hydration and are an important part of proper aftercare.
• Protect from the sun: Limit direct sun exposure and use broad-spectrum SPF as directed once your provider confirms it is appropriate for your skin.

Consistent aftercare helps protect the skin while it recovers and supports the results of treatment. If discomfort worsens, persists beyond the expected window, or concerns you, contact your provider for individualized advice.

Frequently Asked Questions

How many sessions are usually needed for smile lines?

A professional plan commonly includes 3 to 6 sessions spaced about four weeks apart. Your provider may adjust the number based on skin condition, line depth, treatment response, and whether traditional or RF microneedling is more appropriate. A consultation is the right time to set realistic goals.

Does microneedling around the mouth hurt?

Most professional appointments include a topical numbing step before treatment. You may feel pressure, vibration, or brief prickling as the device moves across the perioral area. Comfort varies by sensitivity and treatment depth, so tell your provider if an area feels uncomfortable.

When will I see results?

Some people notice an early improvement in texture as the skin settles, but collagen remodeling develops gradually. Corrective Microneedling™ follows inflammatory, proliferation, and remodeling phases, extending from the first few days through several months. Results therefore continue to refine after the treatment series.

Can microneedling be combined with other treatments?

It may be combined with complementary options when a qualified provider determines that the timing and treatment plan are appropriate. RF microneedling adds controlled thermal energy, while traditional microneedling focuses on physical collagen induction. Your provider should evaluate your skin and goals before combining modalities.

How much does treatment cost?

There is no single price for treating smile lines. Cost varies by provider, location, device, treatment depth, number of sessions, and whether RF technology or professional skincare is included. Ask for a consultation-based estimate rather than relying on a generic online range.

Schedule Your Consultation for Microneedling for Smile Lines

A professional consultation can help determine whether traditional microneedling, RF microneedling, or a Corrective Microneedling approach best fits your skin and treatment goals. If you are ready to take the next step, schedule a consultation for professional microneedling treatment with MDPen. Your provider can discuss appropriate treatment depth, expected results, and a plan for addressing nasolabial folds and smile lines.