Acne may settle with time, but the marks it leaves behind can sometimes be more difficult to manage than the acne itself.
One of the most common questions I hear from patients with acne scars is: “Which treatment will remove my acne scars?”
The answer is rarely one procedure.
Acne scars are not all the same. A person may have narrow, deep scars, broad depressions, scars tethered to deeper tissue, raised scars, pigmentation—or several of these at the same time. A laser that works well for one type of scar may produce limited improvement in another. Similarly, microneedling, subcision or chemical treatment should not be recommended simply because a procedure is popular.
The first step in acne scar treatment is therefore not choosing a machine or procedure. It is identifying the scar correctly.
This article explains the different types of acne scars, why they develop, which treatments may be considered for each type and why a combination approach is often required.
What Are Acne Scars?
Acne scars are permanent changes in the texture or contour of the skin that develop after inflammatory acne heals.
When acne inflammation extends deeper into the skin, it can damage collagen and surrounding tissue. The body then attempts to repair the area. If insufficient collagen is produced during healing, the skin may sink and form a depressed or atrophic scar. If excessive collagen is produced, a raised or hypertrophic scar or keloid may develop.
It is also important to distinguish true acne scars from the colour changes that remain after acne.
A flat brown or dark mark after a pimple is usually post-inflammatory hyperpigmentation (PIH) rather than a depressed scar. Red or pink marks can represent post-inflammatory erythema.
These colour changes and true scars can coexist, but their treatments are different.
That is why simply saying “I have acne marks” is not enough to determine the right treatment.
Why Do Some People Develop Acne Scars?
Not everyone with acne develops significant scarring.
Scarring is more likely when acne is inflammatory, deep or persistent. Nodules and cysts are particularly capable of damaging deeper skin structures.
Factors that may increase the likelihood of scarring include:
- Severe inflammatory acne
- Nodules and cysts
- Delayed acne treatment
- Repeated acne flare-ups
- Picking, squeezing or scratching acne lesions
- Individual healing characteristics
- A tendency to form hypertrophic scars or keloids
The most effective way to deal with acne scars is, whenever possible, to prevent new ones from forming.
If a patient still has active inflammatory acne, controlling the acne usually becomes the first priority before undertaking an extensive scar-correction programme.
What Are the Main Types of Acne Scars?
Most depressed facial acne scars can broadly be divided into three morphological types:
- Ice pick scars
- Boxcar scars
- Rolling scars
A patient can have one type, but mixed scarring is extremely common.
There are also raised scars—hypertrophic scars and keloids—which behave very differently and require a different treatment strategy.
Understanding these differences is fundamental to successful acne scar treatment.
- Ice Pick Acne Scars
Ice pick scars are small, narrow and deep.
They look almost as though the skin has been punctured with a sharp object. The opening at the surface may be quite small, while the scar extends more deeply into the skin.
Because these scars are deep, treatments that primarily remodel the surface may not adequately reach the base of the scar.
What treatments may work for ice pick scars?
TCA CROSS
TCA CROSS stands for trichloroacetic acid chemical reconstruction of skin scars.
Instead of applying a chemical peel across the entire face, a dermatologist carefully places a high-concentration acid into individual scars. This creates a controlled local injury intended to stimulate remodelling and collagen formation as the area heals.
TCA CROSS can be particularly useful for selected deep, narrow ice pick scars.
It is not the same as a routine salon chemical peel and should be performed by a doctor experienced in the technique.
Incorrect application can lead to complications such as:
- Post-inflammatory pigmentation
- Prolonged redness
- Widening of a scar
- Irritation
- Additional scarring
This is especially important in Indian skin, where post-inflammatory hyperpigmentation can be a significant concern.
Punch excision
Very deep and well-defined ice pick scars may sometimes be treated by punch excision.
The individual scar is surgically removed using a tiny circular instrument, after which the opening is closed or allowed to heal depending on the technique.
The aim is to replace a deep, conspicuous scar with a smaller and potentially less noticeable scar that can later be resurfaced if required.
Punch techniques are generally reserved for carefully selected individual scars rather than being used across the whole face.
Laser treatment
Fractional laser resurfacing may be used later to improve the overall texture, but laser alone may not adequately correct very deep ice pick scars.
Practical point: For deep ice pick scars, treatment often needs to target the individual scar before general resurfacing is considered.
- Boxcar Acne Scars
Boxcar scars are round or oval depressions with relatively well-defined edges.
Imagine a small crater with more clearly visible borders than a rolling scar.
They can be:
- Shallow
- Medium depth
- Deep
The depth is important because shallow boxcar scars may respond to resurfacing procedures, whereas deep boxcar scars may require more targeted treatment.
What treatments may work for boxcar scars?
Fractional laser resurfacing
Fractional lasers create microscopic treatment zones in the skin while leaving surrounding tissue relatively intact.
As the treated areas heal, collagen remodelling occurs. Over multiple sessions, this can improve skin texture and make some boxcar scars less prominent.
Fractional laser treatment may be particularly useful for shallow-to-moderate boxcar scars and overall textural irregularity.
The choice between ablative and non-ablative fractional technologies depends on factors such as:
- Scar depth
- Skin type
- Desired improvement
- Acceptable downtime
- Pigmentation tendency
- Previous treatment
- Medical history
More aggressive treatment does not automatically mean a better result.
Microneedling
Microneedling uses controlled needle penetration to stimulate a wound-healing response and collagen remodelling.
It can be useful for selected shallow and moderate atrophic scars and has the advantage of being suitable across a broad range of skin tones when performed appropriately.
Treatment generally requires multiple sessions.
Radiofrequency microneedling
Radiofrequency microneedling combines needles with controlled radiofrequency energy delivered at predetermined depths.
It can be considered for certain atrophic scars, particularly where collagen remodelling and textural improvement are desired.
Punch elevation
Some sharply defined, deeper boxcar scars may respond poorly to resurfacing alone.
In selected cases, a technique called punch elevation can be used to release and elevate the base of an individual scar so that it lies closer to the surrounding skin level.
Resurfacing may then be performed later to blend the area.
- Rolling Acne Scars
Rolling scars create broad, shallow depressions that give the skin an uneven or wave-like appearance.
Unlike ice pick scars, they usually do not have a tiny deep opening. Unlike boxcar scars, their edges tend to be less sharply defined.
A major reason rolling scars form is that fibrous bands underneath the skin can pull the surface downward.
This is why simply resurfacing the top of a tethered rolling scar may not be enough.
What treatment may work for rolling scars?
Subcision
Subcision is one of the most important procedures for selected tethered rolling scars.
A specialised needle or instrument is introduced underneath the scar to release fibrous bands that are pulling the skin down.
Once these bands are released, the depressed area may lift, and healing can stimulate additional collagen formation.
Subcision may be performed alone, but it is frequently combined with other treatments.
These can include:
- Fillers
- Fractional laser
- Microneedling
- Radiofrequency microneedling
- Other collagen-remodelling procedures
The appropriate combination depends on the scar.
Dermal fillers
After a tethered scar has been adequately released, a filler may sometimes be used to restore volume beneath selected depressions.
Fillers are not suitable for every acne scar. They tend to be more useful for certain broad, depressed scars than very narrow ice pick scars.
Depending on the product used, results may also be temporary.
- Hypertrophic Acne Scars
Not every acne scar is depressed.
A hypertrophic scar is raised above the surrounding skin because excessive collagen has formed during healing.
These scars may occur on areas such as the:
- Jawline
- Chest
- Shoulders
- Upper back
They should not be treated in the same way as depressed scars.
Treatment options may include
Depending on the scar, dermatologists may consider:
- Intralesional corticosteroid injections
- Other intralesional medicines
- Silicone-based therapy
- Selected laser treatments
- Cryotherapy in appropriate cases
- Combination treatment
The aim is often to flatten and soften the scar and reduce associated redness, discomfort or itching.
- Keloid Acne Scars
Keloids are also raised scars, but unlike hypertrophic scars, they can grow beyond the boundaries of the original acne lesion.
People who are predisposed to keloid formation require particularly careful treatment.
Simply cutting out a keloid may not solve the problem because the scar can recur.
Treatment may involve a combination of approaches, such as injections, laser or other therapies depending on the individual case.
If you have previously formed keloids after acne, piercings, injury or surgery, tell your dermatologist before undergoing any procedure.
Acne Marks vs Acne Scars: Why the Difference Matters
This is one of the most important distinctions I make during consultation.
A patient may say:
“Doctor, I have a lot of acne scars.”
But on examination, many of the visible marks may actually be pigmentation rather than structural scarring.
Brown or dark flat marks
These are often post-inflammatory hyperpigmentation.
Treatment may include:
- Sun protection
- Topical medication
- Retinoids where appropriate
- Pigment-modulating treatments
- Chemical peels in selected patients
- Other dermatologist-directed treatments
Red acne marks
Persistent redness after acne may require a different strategy, including selected vascular or light-based treatments.
Depressed scars
These represent actual loss or alteration of skin structure and generally require procedural treatment if significant improvement is desired.
Treating pigmentation with an aggressive scar procedure when it is not necessary can expose the patient to avoidable side effects.
Correct diagnosis comes first.
Does Microneedling Work for Acne Scars?
Microneedling is one of the most frequently requested acne scar procedures.
It creates controlled micro-injuries in the skin, stimulating a healing response and collagen remodelling.
Evidence supports microneedling as a useful treatment for atrophic acne scars, either alone or as part of combination treatment.
However, the important question is not:
“Does microneedling work?”
It is:
“Will microneedling work for my type of scar?”
For example, it may help improve general atrophic scarring and texture but is unlikely to be the complete solution for a very deep ice pick scar or a heavily tethered rolling scar.
This distinction can save patients from undergoing repeated sessions of a procedure that was never ideally suited to the dominant scar type.
Is Laser the Best Treatment for Acne Scars?
Laser is often marketed as if it were synonymous with acne scar treatment.
It isn’t.
Fractional laser resurfacing can be an effective component of acne scar management. It can improve collagen remodelling, skin texture and the appearance of certain atrophic scars.
But laser does not mechanically release a fibrous band underneath a tethered scar. It also may not adequately treat the full depth of a narrow ice pick scar.
This is why I prefer to think of laser as one tool within an acne-scar treatment plan, rather than the treatment for every scar.
The dermatologist also has to consider the patient’s skin tone and tendency to develop pigmentation after inflammation.
In darker skin phototypes, treatment parameters and pre- and post-procedure care require particular attention because post-inflammatory hyperpigmentation can occur.
What Is Fractional CO2 Laser for Acne Scars?
Fractional CO2 laser is an ablative fractional resurfacing technology.
Instead of removing the entire skin surface uniformly, fractional treatment creates microscopic columns of controlled thermal injury. Healing around these columns stimulates remodelling and new collagen formation.
It can be useful for selected atrophic scars and textural irregularity.
However, patients need to understand the trade-off between treatment intensity and recovery.
Possible effects after treatment include:
- Redness
- Swelling
- Crusting
- Temporary sensitivity
- Pigmentation changes
- Infection in uncommon cases
- Prolonged redness
- Rare scarring
The appropriate settings should be selected according to the patient’s scar pattern, skin type and treatment history.
Radiofrequency Microneedling vs Microneedling: What’s the Difference?
Traditional microneedling creates controlled mechanical micro-injuries.
Radiofrequency microneedling additionally delivers controlled energy through needles into the skin.
Both approaches aim to stimulate collagen remodelling, but they are not interchangeable in every patient.
Radiofrequency microneedling may be useful when deeper controlled energy delivery is desired. Conventional microneedling can also produce meaningful improvement in selected atrophic scars.
The decision should be based on scar morphology and patient factors rather than simply choosing whichever device is newer.
What Is Subcision and Who Needs It?
Subcision deserves special attention because patients with rolling scars are sometimes offered multiple resurfacing sessions without addressing the tethering beneath the scar.
If the skin is physically being pulled downward by fibrous tissue, resurfacing the top alone may have limited effect.
During subcision, the dermatologist releases these fibrous attachments beneath the scar.
Temporary effects can include:
- Swelling
- Bruising
- Tenderness
- Small areas of bleeding
- Temporary lumps or firmness
Less common complications can occur, which is why the procedure requires appropriate anatomical knowledge and technique.
Subcision is not necessary for every depressed scar.
TCA CROSS vs Chemical Peel
Patients sometimes assume these are the same treatment.
They are not.
A routine chemical peel is applied over a broader area of skin using a carefully selected chemical and concentration.
TCA CROSS, on the other hand, involves highly focal application of trichloroacetic acid directly into selected scars.
Its role is particularly relevant to certain ice pick and narrow deep scars.
Because the chemical used can be strong, precise application is essential.
Can PRP Treat Acne Scars?
Platelet-rich plasma, commonly called PRP, is sometimes combined with procedures such as microneedling or laser treatment.
PRP is prepared from the patient’s own blood and contains concentrated platelets.
Some studies suggest that PRP may enhance outcomes when used alongside certain acne-scar procedures. It should, however, be regarded as an adjunct in selected cases, rather than a universal standalone cure for acne scars.
Patients should be cautious of packages that promise complete scar removal with PRP alone.
Can Chemical Peels Remove Acne Scars?
Chemical peels have a role in dermatology, but their usefulness depends on what is being treated.
Superficial peels may help with:
- Pigmentation
- Acne
- Uneven skin tone
- Very superficial textural irregularities
They cannot be expected to lift a deeply tethered rolling scar or eliminate a deep ice pick scar.
Medium or deeper chemical techniques have different indications and risks and require careful patient selection.
Again, the procedure must match the problem.
Why Combination Treatment Often Gives Better Results
Most patients do not walk into a dermatology clinic with ten identical scars.
A typical patient may have:
- Several ice pick scars on the cheeks
- Rolling scars on the lower cheeks
- A few boxcar scars
- Enlarged pores
- Brown pigmentation
- Ongoing acne
Using the same procedure everywhere ignores these differences.
A dermatologist may instead develop a staged treatment plan.
For example:
Ice pick scars → targeted TCA CROSS
Tethered rolling scars → subcision
Selected deep boxcar scars → punch technique
General texture and shallow scars → microneedling, RF microneedling or fractional laser
Residual pigmentation → appropriate pigment treatment
This does not mean every patient needs all of these treatments. The principle is simply that different components of scarring may need different solutions.
Modern evidence increasingly supports this scar-specific, combination approach for moderate-to-severe atrophic acne scarring.
Can Acne Scars Be Removed 100%?
This is an important question, and expectations need to be realistic.
Acne scar treatment generally aims to improve scars, not promise perfectly scar-free skin.
The amount of improvement varies according to:
- Scar type
- Scar depth
- Number of scars
- Duration of scarring
- Skin type
- Age
- Active acne
- Previous procedures
- Individual collagen response
- Treatment selected
- Number of sessions
- Aftercare
Even with an excellent treatment response, some scars may remain visible.
Any clinic promising “100% acne scar removal” should therefore be approached cautiously.
A better goal is meaningful improvement in texture and scar visibility while keeping treatment risks acceptable.
How Many Sessions Are Required?
There is no standard number for everyone.
Some focal procedures may target individual scars over a small number of sittings, whereas collagen-remodelling procedures commonly require a series of treatments separated by healing intervals.
Before recommending a number of sessions, the dermatologist should examine:
- Scar morphology
- Scar severity
- Skin type
- Previous treatment
- Treatment selected
- Healing response
- Patient expectations
Treatment should ideally be reassessed as the skin responds rather than committing every patient to an identical package.
Should Active Acne Be Treated Before Acne Scars?
In most cases, yes.
If new inflammatory acne continues to develop while scars are being treated, new scars may continue to form.
The acne itself therefore needs to be brought under appropriate control.
Depending on the patient, acne management may include:
- Topical retinoids
- Benzoyl peroxide
- Other topical medicines
- Oral medication when indicated
- Hormonal treatment in appropriate female patients
- Lifestyle and skincare modifications
Treatment must be prescribed according to the patient’s clinical condition.
Once active acne is controlled or sufficiently stable, the dermatologist can concentrate more effectively on correcting existing scars.
Acne Scar Treatment in Indian Skin
Indian skin requires thoughtful procedural planning.
Melanin provides many biological advantages, but it also means that inflammation or aggressive procedures can sometimes trigger post-inflammatory hyperpigmentation.
For this reason, acne scar treatment in Indian skin should consider:
- Skin phototype
- Existing pigmentation
- Recent tanning or sun exposure
- History of pigmentation after procedures
- History of keloid formation
- Type and depth of scar
- Energy settings
- Treatment intervals
- Pre-procedure preparation
- Post-procedure sun protection
The objective should not be to use the maximum possible laser energy or deepest possible procedure.
It should be to achieve useful improvement while keeping the risk of complications acceptable.
What Should You Avoid Before and After Acne Scar Procedures?
Instructions vary according to the procedure, so the treating dermatologist’s advice takes priority.
In general, patients should tell their dermatologist about:
- Current acne medications
- Oral isotretinoin use, current or recent
- Pregnancy or breastfeeding
- History of herpes infection
- Tendency to develop keloids
- Previous cosmetic procedures
- Allergies
- Medicines and supplements
- Recent tanning
- Active skin infections
After treatment, sun protection is particularly important.
Picking crusts, scratching treated skin or applying unprescribed active skincare products can interfere with healing.
What About Home Remedies for Acne Scars?
Patients commonly try lemon juice, scrubs, baking soda, undiluted acids or aggressive home peeling products.
These approaches do not reconstruct deep acne scars and can irritate or burn the skin.
I am particularly cautious about aggressive DIY treatments in patients who already have pigmentation, because additional inflammation can make the colour difference more noticeable.
Good skincare can support healthy skin and prevent acne, but structural scars usually require professional assessment if significant correction is desired.
How Do I Know Which Acne Scar Treatment Is Right for Me?
A useful acne-scar consultation should involve more than looking at the face for a few seconds and recommending a laser package.
The dermatologist should ideally assess:
Scar type
Are the scars predominantly ice pick, rolling, boxcar, raised—or mixed?
Scar depth
Shallow scars behave differently from deep scars.
Tethering
Does the scar remain pulled downward because of deeper fibrous attachments?
Active acne
Are new inflammatory lesions still forming?
Pigmentation
How much of the patient’s concern is actually pigmentation rather than structural scarring?
Skin type
What is the risk of post-inflammatory pigmentation or other adverse effects?
Previous procedures
Has the patient already undergone laser, microneedling, peels, subcision or other treatments?
Expectations
Is the patient looking for subtle improvement or expecting complete scar disappearance?
Downtime
Can the patient manage several days of visible redness or crusting, or is a lower-downtime approach necessary?
Only after answering these questions should a treatment plan be developed.
Which Procedure Is Best for Each Acne Scar Type?
| Acne Scar Type | Procedures Commonly Considered |
| Ice pick scars | TCA CROSS, punch excision; resurfacing may be added later |
| Shallow boxcar scars | Fractional laser, microneedling, RF microneedling |
| Deep boxcar scars | Punch elevation/excision in selected scars, followed by resurfacing when appropriate |
| Rolling/tethered scars | Subcision, sometimes combined with filler or resurfacing |
| Mixed atrophic scars | Combination treatment based on individual scar morphology |
| Hypertrophic scars | Intralesional treatment, selected lasers and other scar-directed therapies |
| Keloids | Multimodal treatment; recurrence risk must be considered |
| Dark acne marks/PIH | Pigment-directed treatment rather than structural scar correction |
This table is a guide, not a prescription. A dermatologist needs to examine the scars before recommending treatment.
Frequently Asked Questions About Acne Scar Treatment
Which is the best treatment for acne scars?
There is no single best treatment for all acne scars. Treatment depends on whether the scars are ice pick, boxcar, rolling, hypertrophic, keloidal or a combination.
Is laser better than microneedling for acne scars?
Neither is universally better. Fractional lasers can be useful for certain atrophic scars and textural irregularities, while microneedling is effective for selected atrophic scars and can be suitable across a range of skin tones. The correct choice depends on scar morphology, skin type, downtime and treatment goals.
What is the best treatment for ice pick scars?
TCA CROSS and punch techniques are commonly considered for selected deep ice pick scars. General resurfacing may be used later when appropriate.
What is the best treatment for rolling acne scars?
When rolling scars are tethered by fibrous bands, subcision may be particularly useful. It can be combined with other treatments when indicated.
What is the best treatment for boxcar scars?
Shallow boxcar scars may respond to fractional resurfacing, microneedling or radiofrequency microneedling. Deep, sharply defined scars may sometimes require punch techniques.
Can acne scars disappear naturally?
Pigmentation after acne can fade significantly with time, but established structural scars usually do not disappear completely on their own.
Does microneedling permanently remove acne scars?
Microneedling can improve selected atrophic scars through collagen remodelling, but it should not be advertised as permanent or complete scar removal.
Can one laser session remove acne scars?
Usually not. Many scar treatments require multiple sessions or a combination of procedures. The number depends on scar type and severity.
Is acne scar treatment painful?
Discomfort varies according to the procedure. Topical or local anaesthesia may be used for treatments such as laser, microneedling, subcision or punch procedures when appropriate.
Can dark skin undergo acne scar treatment?
Yes. Many acne scar procedures can be performed on darker skin tones, but treatment selection and settings require particular care because of the risk of post-inflammatory pigmentation.
Can acne scars return after treatment?
A successfully remodelled scar does not behave like active acne, but untreated acne can produce new scars. This is why controlling active acne remains important.
A More Practical Way to Think About Acne Scar Treatment
If there is one point I would like patients to remember, it is this:
Do not choose the procedure first. Identify the scar first.
Acne scar treatment has moved away from the idea that every patient needs the same laser or the same number of sessions.
An ice pick scar may need focal reconstruction. A rolling scar may need release from underneath. A shallow boxcar scar may respond to resurfacing. Pigmentation needs an entirely different strategy.
And when these problems coexist—as they frequently do—the treatment may need to be staged.
The objective is not simply to perform more procedures. It is to use the right procedure, on the right scar, at the right stage of treatment.
When Should You Consult a Dermatologist for Acne Scars?
Consider a dermatology consultation if:
- Acne scars are becoming progressively more noticeable
- You continue to develop new scars
- Acne remains active
- Scars are affecting your confidence
- You have deep or tethered scars
- Over-the-counter products have not helped
- You are considering laser, microneedling, subcision or TCA CROSS
- Previous acne scar treatment produced little improvement
- You developed pigmentation after a previous procedure
- You are unsure whether you have scars or acne marks
An assessment before treatment can prevent unnecessary procedures and help set realistic expectations.
Conclusion
Acne scar treatment is not about finding one universally “best” procedure.
It is about understanding the scar.
Ice pick scars, boxcar scars, rolling scars and raised scars are structurally different and often respond to different treatments. TCA CROSS, subcision, microneedling, radiofrequency microneedling, fractional lasers, punch techniques and fillers all have potential roles, but none should automatically be offered to every patient.
For many patients with mixed acne scarring, a carefully planned combination approach can be more logical than repeatedly performing one procedure.
Equally important is controlling active acne, considering the patient’s skin type, reducing pigmenta