Different acne scars form through different mechanisms. Some result from collagen loss, while others are caused by fibrous bands tethering the skin downward. Surface treatments alone may not be sufficient for deeper scars. Many clinics in Singapore, therefore, use combination treatments, such as subcision followed by laser therapy, to address multiple causes of scarring.
The goal of treatment is typically visible improvement, rather than complete removal. Results develop gradually and are influenced by collagen remodelling. Understanding your scar type is an important first step in choosing the right treatment approach.
What Are the Common Types of Acne Scars?
Acne scars are generally classified by their shape, depth, and underlying cause. Identifying the scar type can help inform suitable treatment options.
Ice Pick Acne Scars: These are narrow, deep scars that extend into the deeper layers of the skin. They often appear as small, sharp indentations.
Rolling Acne Scars: Rolling scars are usually caused by fibrous bands beneath the skin that pull the surface downward, creating a wavy appearance. These scars are often more visible under angled lighting.
Boxcar Acne Scars: Boxcar scars are wider, more defined depressions that can be shallow or deep. They may involve both surface irregularities and underlying volume loss.
Which Acne Scar Treatment Is Suitable for Each Scar Type?
The most appropriate acne scar treatment depends on the mechanism by which the scar formed and the location of the structural damage within the skin. Some scars result from collagen loss near the surface, while others are caused by fibrous bands pulling the skin downward. Because of these differences, various scar types often require distinct treatment mechanisms.
Treatments for Ice Pick Scars
Due to their depth, they often respond less effectively to surface treatments such as microneedling or mild resurfacing lasers.
Treatment options may include:
- TCA CROSS
TCA CROSS (Chemical Reconstruction of Skin Scars) involves the application of a high-concentration chemical solution directly into the scar. This technique stimulates collagen production within the scar over time, thereby gradually reducing its appearance. TCA CROSS is frequently used in clinical settings to manage true ice pick scars. - Fractional CO₂ Laser (Targeted Use)
In selected cases, a fractional CO₂ laser may be used to target specific ice pick scars, often as part of a broader treatment plan. However, laser resurfacing alone is typically not sufficient for deep ice pick scars and may be more effective when combined with focal techniques such as TCA CROSS.
Treatments for Rolling Scars
Rolling scars develop when fibrous bands pull the skin downward from underneath, creating a wavy or uneven appearance. Because this tethering occurs below the surface, lasers alone typically do not provide significant improvement.
Treatment options may include:
- Subcision: Subcision is commonly used as the first step in treating rolling scars. This procedure involves carefully releasing the fibrous bands beneath the skin, which helps the area lift and appear smoother over time. In many cases, subcision is necessary for visible improvement; without it, results from laser treatments may be limited.
- Combining Subcision With Laser Treatments: Once the tethering has been released, laser treatments can be introduced to improve surface texture and support collagen production. This combination allows both deeper structural changes and surface irregularities to be addressed through a staged, balanced approach.
Treatments for Boxcar Scars
Boxcar scars are wider depressions with well-defined edges. They may be shallow or deep and often involve both surface texture changes and underlying volume loss. Consequently, boxcar scars may require more than one treatment approach, depending on their depth and tethering.
Treatment options may include:
- Fractional CO₂ Laser: Fractional CO₂ laser is used for skin resurfacing and stimulation of collagen remodelling. It is commonly considered for shallow to moderate boxcar scars where surface texture irregularity is a prominent feature.
- Subcision Combined with Laser: For deeper boxcar scars, subcision may be performed first to release any underlying tethering, followed by laser treatment to address surface texture. This combined approach allows both the structural and surface components of the scar to be addressed and may support more even improvement compared to laser treatment alone.
- Dermal Fillers (Selected Cases): In selected cases, dermal fillers may be used to restore volume in deeper boxcar scars. Fillers are typically considered adjuncts rather than standalone treatments and may not be suitable for all patients.
Treatments for Mild or Shallow Scars
Mild or shallow acne scars involve less structural damage and may respond to less intensive treatments. These approaches focus on gradual texture improvement and collagen stimulation over time.
Treatment options may include:
- Pico or Picosecond Laser
Pico or picosecond lasers are commonly used for mild scarring and uneven texture, and may also help address pigmentation. They are often selected for patients who prefer gradual improvement with relatively short downtime. - RF Microneedling
Radiofrequency microneedling delivers energy into the deeper skin layers to stimulate collagen while preserving the skin surface. It may be suitable for mild to moderate scarring and can be used across a range of skin types.
How to Choose the Right Acne Scar Treatment Clinic
Choosing an acne scar treatment clinic is an important part of the treatment process. Acne scars vary in type and severity, and outcomes depend on appropriate assessment, technique selection, and realistic planning.
1. Scar Assessment
A thorough acne scar assessment typically considers:
- The type of scars present (ice pick, rolling, boxcar, or mixed)
- The depth of scarring
- Whether scars are associated with tethering beneath the skin
Clinics that perform structured scar assessments are better positioned to recommend appropriate treatment approaches.
2. Experience With Combination Treatments
Patients can have multiple scar types, so a single treatment approach may not be sufficient. Clinics experienced in combination therapy can appropriately plan treatment sequencing, such as performing subcision before laser resurfacing.
Combination planning is relevant because:
- Subcision and laser treatments address different structural components of scarring
- The sequence of procedures can influence healing and recovery.
- A structured plan can help address multiple scar features over time.
Clinics should be able to explain clearly why more than one treatment is recommended and how the proposed sequence relates to the specific scar pattern being treated.
3. Realistic Expectations
Acne scar treatment usually improves skin texture gradually rather than completely removing scars. For this reason, clinics should discuss key aspects of the treatment plan clearly, including:
- The expected degree of improvement
- The number of sessions that may be required
- The typical timeline for visible changes
Setting realistic expectations supports informed decision-making and helps patients evaluate treatment options appropriately. Clear communication is an important indicator of responsible acne scar care.
FAQ
Can acne scars be removed permanently?
Acne scars are usually improved, not completely removed. Treatments stimulate collagen and release tethered scars, leading to long-term smoothing rather than total scar erasure.
Is laser or subcision better for acne scars?
Neither treatment is universally more suitable. Subcision addresses tethered scars such as rolling scars, while laser treatments focus on surface texture. Many patients undergo both as part of a combined approach.
How long before results are visible?
Results appear gradually over weeks to months as collagen remodels. Multiple sessions are usually required, with improvement becoming more noticeable after each treatment cycle.
