Acne may eventually disappear, but the scars it leaves behind can remain for years. For many people, treating acne scars is not as simple as choosing one cream or one procedure. Different scars form in different ways, which means they may respond differently to treatment.
Today, dermatology offers several options for improving acne scars, including microneedling, fractional laser treatments, radiofrequency microneedling, chemical peels, subcision, and collagen-stimulating procedures.
So, which one is best?
The answer depends on the type and depth of the scar, your skin type, the presence of active acne, previous treatments, and how much downtime you are comfortable with. The American Academy of Dermatology notes that depressed acne scars may require procedures or combinations of treatments to achieve the best possible improvement.
This guide compares the most commonly used acne scar treatments to help you understand how they differ.
What Are Acne Scars?
Acne scars develop when inflammation from acne damages the skin's deeper layers and affects collagen production during healing. They are generally divided into two broad categories.
Atrophic acne scars: These are depressed or indented scars caused by loss of collagen. Common types include ice pick scars (narrow, deep depressions), boxcar scars (wider depressions with relatively defined edges) and rolling scars (broad, shallow depressions that can create an uneven skin texture).
Raised acne scars: Hypertrophic scars and keloids are raised rather than indented. They occur when excessive scar tissue develops during healing. The treatment approach for raised scars is different from that used for atrophic acne scars.
Because scar types vary considerably, a dermatologist should assess the skin before recommending a procedure.
Acne Scar Treatments Compared
There is no single procedure that works equally well for every type of acne scar. Here is a simplified comparison.
Microneedling: Often considered for mild to moderate atrophic scars. Main approach is collagen stimulation. Downtime is usually limited.
RF microneedling: Often considered for texture concerns and atrophic scars. Combines needling with radiofrequency energy. Downtime is usually limited to moderate.
Fractional CO₂ laser: Often considered for deeper texture irregularities. Works through laser resurfacing and collagen remodeling. Downtime is moderate.
Chemical peels: Often considered for selected superficial scars and pigmentation. Works through controlled exfoliation. Downtime depends on the peel used.
Subcision: Often considered for tethered rolling scars. Releases fibrous scar bands beneath the skin. Downtime is usually short to moderate.
Combination treatments: Often considered for mixed or deeper scarring. Uses multiple mechanisms together. Downtime depends on the procedures selected.
These categories are not interchangeable. Treatment should be selected according to the scar pattern rather than simply choosing the procedure that sounds most advanced.
1. Microneedling for Acne Scars
Microneedling uses very fine needles to create controlled micro-injuries in the skin. The healing response stimulates collagen and elastin production, which can gradually improve the appearance and texture of depressed acne scars.
The American Academy of Dermatology describes microneedling as a collagen-induction treatment and notes that it can be used for acne scarring across different skin tones.
Potential benefits: collagen stimulation, improvement in skin texture, limited downtime compared with more aggressive resurfacing procedures, suitability across different skin types, and the option to combine it with other treatments.
Microneedling is generally more suitable for certain shallow to moderate atrophic scars rather than very deep or strongly tethered scars.
A 2026 systematic review and meta-analysis comparing microneedling with chemical peels found broadly comparable results for atrophic acne scars overall, reinforcing the importance of individualized treatment selection rather than assuming one approach is universally superior.
2. Radiofrequency Microneedling
Radiofrequency microneedling combines two mechanisms: controlled needling and radiofrequency energy. The needles create controlled channels in the skin while radiofrequency energy delivers heat into deeper tissue. This can stimulate collagen remodeling while targeting skin texture.
Potential benefits: collagen remodeling, improvement in uneven skin texture, usefulness for certain atrophic scars, and generally limited surface damage compared with some ablative laser procedures.
RF microneedling may be considered when a patient wants collagen stimulation with a treatment approach that can be tailored to the depth and condition of the skin. However, results depend on the device, settings, scar type and treatment technique.
3. Fractional CO₂ Laser
Fractional CO₂ laser resurfacing uses laser energy to create controlled microscopic treatment zones in the skin. As the skin heals, collagen remodeling can improve the appearance of acne scars and uneven texture. The American Academy of Dermatology lists laser treatment among procedures dermatologists may use for depressed acne scars.
Potential benefits: significant resurfacing, usefulness for certain deeper textural irregularities, stimulation of collagen remodeling, and improvement in overall skin texture.
However, fractional CO₂ laser can involve more downtime than microneedling.
A 2026 systematic review comparing fractional CO₂ laser with needling-based treatments found broadly comparable efficacy across some measures, while also identifying differences in adverse effects. The analysis found a higher risk of post-inflammatory hyperpigmentation with fractional CO₂ laser compared with standard microneedling.
Another meta-analysis comparing fractional CO₂ laser with RF microneedling found greater improvement with CO₂ laser in the analyzed trials, but also greater pain, longer erythema and higher risk of post-inflammatory hyperpigmentation. This is particularly relevant for people with pigmentation-prone skin.
4. Chemical Peels
Chemical peels use controlled application of specific chemical solutions to exfoliate the skin and stimulate the skin's renewal process. Depending on the type and strength of the peel, they may help with uneven skin texture, mild acne scarring, post-acne pigmentation and surface irregularities.
The AAD notes that chemical peels may stimulate collagen and elastin and can be used as part of treatment for depressed acne scars.
However, not every peel is designed to treat deeper scars. The type, concentration, depth and application technique matter. A dermatologist should determine whether a chemical peel is appropriate, particularly for people who are prone to pigmentation changes.
5. Subcision for Rolling Acne Scars
Some rolling acne scars are attached to deeper fibrous bands beneath the skin. These bands can pull the surface downward, creating a tethered or depressed appearance. Subcision is a procedure designed to release these fibrous connections beneath the scar.
Potential benefits: particularly useful for selected tethered rolling scars, addresses the underlying scar attachment, and can be combined with other treatments.
Subcision is fundamentally different from microneedling or laser resurfacing because it targets the tissue beneath the scar rather than primarily remodeling the skin surface. This is one reason scar classification is so important — a procedure that works well for a rolling scar may not be the best option for an ice pick scar.
Which Acne Scar Treatment Is Best?
There is no universal "best" acne scar treatment. Instead, the better question is: which treatment is best suited to your scar type and skin?
For mild or shallow texture changes: microneedling or selected chemical peels may be considered.
For atrophic scars with texture concerns: microneedling, RF microneedling or fractional laser may be options depending on scar severity and skin characteristics.
For tethered rolling scars: subcision may be considered because it addresses the fibrous bands pulling the scar downward.
For deeper or mixed scarring: a combination approach may be more appropriate.
Dermatologists frequently combine treatments because different procedures address different parts of the scar. The AAD specifically notes that more than one treatment may be used to improve depressed acne scars.
Why Combination Acne Scar Treatments May Work Better
Acne scars are rarely identical across the entire face. One area may contain rolling scars, another boxcar scars, and another pigmentation left behind after acne. Trying to treat all of them with one procedure may not produce the desired result.
A personalized treatment plan may combine procedures that address different mechanisms. Subcision can address tethered scars. Microneedling or RF microneedling can stimulate collagen remodeling. Laser resurfacing can target surface texture and deeper remodeling. Chemical peels may help selected superficial irregularities and pigmentation. The combination depends on the individual patient's skin and scar characteristics.
Acne Scar Treatment: What About Downtime?
Downtime varies significantly between procedures. Microneedling generally involves relatively limited recovery, while fractional CO₂ laser can involve more noticeable redness, swelling or peeling. Chemical peel recovery depends heavily on the type and depth of the peel. Subcision can involve temporary swelling or bruising.
Your dermatologist should explain expected redness, swelling, peeling and sensitivity, sun protection requirements, when makeup can be used, and when normal activities can resume.
Do not choose a procedure based solely on downtime. The most appropriate treatment is the one that balances expected benefit, safety, skin type, scar type and recovery requirements.
How Many Sessions Will You Need?
Acne scar treatment is usually a process rather than a one-time procedure. The number of sessions depends on scar depth, scar type, skin condition, the treatment selected, response to previous sessions and whether combination treatments are used.
Collagen remodeling also takes time. Therefore, immediate changes after a procedure do not necessarily represent the final result. A dermatologist can create a treatment plan based on your specific scars and adjust it as your skin responds.
Can Acne Scar Treatments Completely Remove Scars?
Most acne scar treatments aim to reduce the appearance and texture of scars, not guarantee complete removal. The extent of improvement varies from person to person. Factors such as scar depth, skin type, scar duration, treatment choice and individual healing response can influence results.
It is also important to distinguish between acne scars and post-acne marks. Flat red, pink or brown marks left after acne are not the same as depressed scars. They may require a different treatment strategy.
How to Choose the Right Acne Scar Treatment
Before choosing a procedure, consider these five factors.
1. Scar type: are your scars ice pick, boxcar, rolling or raised?
2. Scar depth: shallow scars and deep scars often require different approaches.
3. Skin type: your skin tone and tendency toward pigmentation changes can influence treatment selection.
4. Active acne: if you still have significant active acne, controlling the acne may need to come before aggressive scar procedures.
5. Downtime: consider how much recovery time you can realistically accommodate.
A consultation with a dermatologist allows these factors to be assessed together rather than choosing a procedure based only on online comparisons.
Final Takeaway
When comparing acne scar treatments, there is no one-size-fits-all answer. Microneedling can stimulate collagen with relatively limited downtime. RF microneedling combines needling with radiofrequency energy. Fractional CO₂ laser provides more intensive resurfacing and collagen remodeling but may involve greater downtime and pigmentation risk in some patients. Chemical peels can be useful for selected superficial concerns, while subcision specifically addresses tethered scars.
The best treatment is ultimately the one matched to your scar type, skin characteristics, goals and tolerance for downtime.
If you are considering acne scar treatment, a professional assessment is the best place to start. An individualized plan can determine whether one procedure or a combination approach is more appropriate for your skin.
Ready to Explore Your Acne Scar Treatment Options?
Acne scars can be different from one person to another, which is why treatment should be personalized rather than selected from a generic list. Book a consultation with Delight Clinic to discuss your skin, scar type and suitable treatment options. You may also want to read our guide to Collagen Stimulation Treatments.
Key Takeaways
- No single acne scar treatment works best for every scar — selection depends on scar type, depth, skin type and downtime tolerance.
- Atrophic scars (ice pick, boxcar, rolling) and raised scars require fundamentally different approaches.
- Microneedling offers collagen stimulation with limited downtime; RF microneedling adds radiofrequency energy for deeper remodeling.
- Fractional CO₂ laser can deliver more intensive resurfacing but carries greater downtime and a higher risk of post-inflammatory hyperpigmentation.
- Subcision targets fibrous bands beneath tethered rolling scars — something resurfacing procedures do not address.
- Combination treatment is often recommended because most faces show more than one scar pattern.
- Treatments aim to improve scar appearance and texture rather than guarantee complete removal.
Frequently Asked Questions
What is the most effective treatment for acne scars? +
There is no single treatment that is best for every acne scar. Treatment depends on whether scars are ice pick, boxcar, rolling or raised, as well as their depth and your skin characteristics. Combination treatment is often considered for mixed or complex scarring.
Is microneedling good for acne scars? +
Microneedling can improve the appearance of certain atrophic acne scars by stimulating collagen production. It may be particularly useful for shallow to moderate textural changes and can sometimes be combined with other treatments.
Is CO₂ laser better than microneedling for acne scars? +
Neither is universally better. Recent evidence suggests that fractional CO₂ laser and needling-based treatments can have comparable efficacy in some outcomes, while their downtime and side-effect profiles differ. Fractional CO₂ laser may carry a higher risk of post-inflammatory hyperpigmentation in some patients.
Does subcision work for all acne scars? +
No. Subcision is designed primarily to release fibrous bands beneath tethered depressed scars, particularly certain rolling scars. It is not automatically appropriate for every scar type.
How many acne scar treatment sessions are needed? +
The number varies depending on scar type, depth, treatment method and individual response. Some patients require multiple sessions or a combination of procedures. A dermatologist can recommend a treatment schedule after examining the scars.
About the Author
Dr. Ashit Gupta — MCh Plastic Surgeon
Founder and Medical Director of Delight Clinic, Gurgaon. MBBS, MS (General Surgery), MCh (Plastic Surgery) from Christian Medical College, Ludhiana (2009); founded Delight Clinic in 2014. Specialises in FUE and Giga Session hair transplant, gynecomastia, rhinoplasty, liposuction and cosmetic dermatology, with 10,000+ procedures performed across both clinic locations in DLF Phase IV and Sector 15, Gurgaon.
Medically reviewed by Dr. Ashit Gupta, MCh Plastic Surgery · Last updated 2026-08-03
Related Articles
Chemical Peels 101: Types, Depths, and What Recovery Really Looks Like
7 min read
Botox vs. Dermal Fillers: Understanding the Difference
5 min read