Acne scars don’t follow a single pattern. Some are deep and narrow, others broad and shallow, and some show up more as colour changes than texture. This diversity is why a one-size-fits-all solution does not work for everyone.
In this article, we draw on the clinical insights of Dr Justin Boey, a medical doctor at Sozo Clinic who manages a wide range of acne scar cases. He explains why combining treatment methods is often considered in scar management. By addressing different layers of the skin and targeting multiple scar types, combination therapy may help achieve a more balanced skin texture and tone.
We’ll break down the types of acne scars, categorise treatments by mechanism, and discuss how doctors combine them in practice. You’ll also gain a clearer picture of the clinical reasoning behind this approach.
Understanding Acne Scars and Their Structural Differences
Acne scars vary widely in their shape, depth, and pigmentation. Some are shallow and discoloured, while others are deeper and more fibrotic. These differences influence how each scar responds to treatment and guide the choice of therapy.
Common Types of Acne Scars:
- Ice Pick Scars – Deep, narrow indentations that extend into the dermis
- Boxcar Scars – Broad depressions with well-defined edges
- Rolling Scars – Sloping depressions that give the skin a wavy texture
- Hypertrophic Scars – Raised, thickened areas due to excess collagen
- Pigmented Scars – Discolouration left after acne has healed
- Atrophic Scars – General loss of tissue, leading to pitted or sunken areas
Why Structure Matters
The depth of a scar and whether it’s anchored by fibrous bands significantly affect the choice and expected response to treatment.
- Scar Depth
Shallow scars that involve the surface layers of the skin (epidermis or upper dermis) may be managed using resurfacing treatments such as fractional lasers or chemical peels. Deeper scars that extend into the lower dermis or subcutaneous layer often require treatments that help stimulate collagen or restore volume.
- Fibrotic Anchoring
Some scars are tethered by fibrous bands that pull the skin downward. In these cases, a technique known as subcision is commonly used to release these anchors.
Treatment Categories and How They Work
Since no single modality targets all types of scars or all levels of the skin, combination therapy allows a tailored approach.
Energy-Based Therapies
These use thermal energy to stimulate collagen production and promote skin renewal:
- Ablative Lasers (e.g. CO₂) – Remove outer layers and stimulate deeper skin regeneration
- Non-Ablative Lasers – Target deeper layers without removing the surface
- Radiofrequency – Delivers controlled heat through microneedles to remodel collagen
- Photonic Therapy – Targets pigment and stimulates healing
Key considerations:
- Penetration Depth: Varies depending on the device and settings. Ablative lasers remove surface layers, while non-ablative systems heat deeper layers without removing skin.
- Downtime: Depends on intensity. Ablative lasers often require more downtime, while RF and non-ablative options allow quicker recovery.
- Pigmentation Risk: May be higher in individuals with darker skin tones. Energy settings and device type must be carefully selected to minimise risk.
These treatments are often used to address shallow atrophic scars and surface irregularities.
Mechanical & Surgical Techniques
These methods physically break down scar tissue or trigger collagen induction:
- Microneedling: Uses fine needles to induce collagen production across superficial layers.
- Subcision: A minor surgical technique where a needle is inserted beneath the skin to sever fibrous bands that tether rolling scars.
- Punch Excision: A targeted technique to remove deep, narrow scars (like ice pick scars), followed by suturing or skin grafting.
These methods are particularly useful for treating rolling scars, tethered scars, and deeper textural irregularities.
Chemical & Topical Solutions
These agents work by exfoliating the surface layers of the skin, correcting pigmentation, or inducing controlled chemical injury to stimulate the formation of new tissue.
- TCA CROSS – High-concentration acid applied directly to ice pick scars
- Chemical Peels (e.g. glycolic acid, VI Peel): Improve skin tone, reduce post-inflammatory hyperpigmentation, and refine overall texture through controlled exfoliation.
- Topical Retinoids: Encourage skin cell turnover, smooth uneven texture, and help fade pigment over time.
These treatments are best suited for superficial scars and pigment changes, as well as for use as part of ongoing skin maintenance.
Injectables & Biologic Agents
These add volume and support skin healing processes:
- PRP (Platelet-Rich Plasma) – Uses growth factors to promote healing
- Dermal Fillers – Replace lost volume in atrophic scars
- Fat Grafting – Natural volume restoration in deeper scars
Often used in combination with subcision or microneedling to enhance structural support and encourage tissue repair.
Why a Combination Approach Outperforms Solo Treatments
While standalone procedures may offer improvements in specific areas, combination approaches are often used to support a more comprehensive treatment plan.
Synergistic Effect of Layered Techniques
When used together, treatments often reinforce each other’s effects. For instance:
- Microneedling + PRP: Microneedling creates microchannels that enable platelet-rich plasma to reach deeper skin layers, thereby boosting collagen production and promoting healing.
- Subcision + Fillers: Subcision releases fibrous bands that tether rolling scars, while dermal fillers provide volume and help prevent the skin from reattaching too early during recovery.
These combinations are often used to address both the physical anchoring of scars and support tissue remodelling.
Simultaneous Multi-Depth Targeting
Acne scar management often requires targeting both the surface and deeper skin layers. Combining modalities can help address concerns at different depths within a single treatment plan.
- Peels + Microneedling: Chemical peels exfoliate the surface layers and help reduce discolouration, while microneedling acts at the dermal level to stimulate collagen production.
- Energy Devices and Chemical Resurfacing: Utilising laser or RF devices in conjunction with chemical peels helps refine both skin texture and tone in a coordinated treatment plan.
This integrative approach helps ensure that multiple aspects of acne scars are considered during treatment planning.
Address Immediate Concerns and Support Ongoing Skin Recovery
Combination treatments are often selected to address both immediate structural concerns and longer-term skin remodelling needs.
- Dermal Fillers: Commonly used to restore volume in atrophic scars, with effects visible shortly after treatment.
- RF or Laser Therapies: Typically used to support collagen stimulation over time, contributing to gradual textural improvement.
This approach can address both short-term concerns, such as surface irregularities or volume loss, while supporting the skin’s healing process as part of a longer-term plan.
Combined Treatments to Streamline Care
Combination treatments can streamline the treatment timeline by addressing multiple concerns in a single session.
- Coordinated Sessions for Multiple Concerns: When suitable, multiple concerns can be treated in a single session, allowing for more efficient use of clinic time and streamlining the treatment journey for the patient.
- Less Downtime: Combining compatible treatments during the same visit can align healing periods, allowing recovery to take place concurrently rather than across multiple stages.
- Strategic treatment planning: By integrating procedures into fewer sessions, clinicians can deliver a comprehensive approach that aligns with both clinical goals and patient preferences, while minimising extended treatment timelines.
This helps patients address multiple skin concerns in a structured way, while aligning with their individual treatment preferences and lifestyle needs.
Tailoring Treatment Plans to Individual Needs
Successful acne scar management involves more than choosing the right treatments. You need to consider your skin type, scar pattern, risk of pigmentation, and daily routine. A personalised approach helps match treatment goals with skin tolerance and recovery expectations.
Customising for Scar Profile & Skin Type
Different scar types require different treatment depths and techniques. Likewise, skin tone plays a critical role in how the skin heals after treatment.
- Fitzpatrick Skin Type: Individuals with darker skin (types IV–VI) are at increased risk of post-inflammatory hyperpigmentation (PIH). Treatments such as fractional lasers or aggressive peels should be used cautiously to avoid triggering excessive melanin production.
- Tailored Energy Settings: Lower fluence or alternative modalities such as radiofrequency microneedling can be safer for darker skin tones. In some cases, non-energy-based methods may be more suitable.
The aim is to support scar improvement without affecting the skin’s natural pigment balance.
Practitioner Skill & Device Compatibility
Combination treatments require thoughtful planning and an understanding of how each modality interacts with the skin and with other therapies.
At Sozo Clinic, treatment plans are developed with careful consideration of scar type, skin tone, and healing response. The team has experience in combining therapies such as subcision, fillers, microneedling, and energy-based devices in a staged, structured manner.
- Coordinated Approach: Methods such as subcision and fillers are often used in sequence. Their timing depends on healing stages and tissue response.
- Minimising Risk: Overlapping procedures without adequate spacing can affect healing. For example, combining deep resurfacing and injectables too closely may lead to complications.
Selecting appropriate treatments, using the correct settings, and spacing sessions appropriately helps support safe and effective outcomes.
Example Treatment Combinations by Scar Type
Certain scar types respond better to specific treatment combinations. Here’s how some common types are often approached:
| Scar Type | Recommended Combination |
|---|---|
| Rolling | Subcision + Biostimulatory Filler + RF Microneedling |
| Boxcar | CO₂ Laser + TCA CROSS |
| Ice Pick | TCA CROSS + Punch Excision |
| Pigmented | Glycolic Peel + Microneedling |
| Mixed Scars | Layered plan combining resurfacing + injectables |
A clear understanding of the skin’s structure and healing process enables clinicians to plan treatment sequences that strike a balance between effectiveness and safety.
Risks, Limitations, and Best Practices
Combination treatments can support the management of acne scars, but they require careful planning and execution. More isn’t always better, especially when it comes to healing skin.
Avoiding Overtreatment
Aggressive or poorly timed combinations may cause more harm than good. Sensitive skin needs time to recover, and overlapping trauma can delay healing or trigger pigmentation issues.
- Spacing Procedures: A safe interval between treatments allows the skin to respond and regenerate properly.
- Layered Planning: Not all modalities should be done in a single session. Staging treatments over time can improve tolerance and outcomes.
Contraindications to Consider
Certain skin conditions or health factors may limit the use of some treatments:
- Active Acne or Inflammation
- Rosacea or Eczema
- Pregnancy or Breastfeeding
- History of Keloid Scarring
- Recent Sunburn or Tanning
In such cases, supportive skincare or milder options may be prioritised until the skin is ready.
The Role of Supportive Care
Post-treatment care helps the skin heal and supports the long-term benefits of the treatment.
- Sun Protection: Daily use of broad-spectrum sunscreen helps reduce the risk of pigmentation changes and supports even skin healing.
- Topicals: Retinoids, pigment-control agents, and gentle moisturisers can enhance recovery and maintain results.
- Lifestyle Adjustments: Avoiding harsh products, limiting direct sun exposure, and not picking at healing skin all help reduce irritation during recovery.
With the right plan and aftercare, combination acne scar treatments can provide safe and meaningful long-term improvements tailored to individual needs.
Support Your Skin with a Thoughtful Treatment Plan
Combination treatments involve an approach that considers various aspects of skin healing. When guided by an evidence-based plan, this method can help manage acne scars by addressing multiple concerns, such as scar depth, volume loss, and uneven texture.
At Sozo Clinic, we develop treatment plans for acne scars that are medically guided and tailored to your skin’s condition. Whether you’re managing rolling scars or a combination of pigmentation and textural changes, our team evaluates your needs to determine an appropriate course of care. We’ll conduct a clinical assessment and discuss suitable options to achieve your goals.
