What Is Acne Scar Revision?
Acne scar revision refers to procedures designed to improve the appearance of scars that remain after active acne has healed.
The objective is usually not to completely erase every scar, but to:
- Reduce the depth of depressed scars.
- Improve uneven skin texture.
- Smooth the transition between scarred and normal skin.
- Stimulate collagen production.
- Create a more even-looking skin surface.
Treatment selection depends heavily on the type and depth of scarring.
Before scar treatment begins, active acne should generally be controlled, because ongoing breakouts can create new scars.
What Types of Acne Scars Are There?
Acne scars are often divided into different categories.
Rolling Scars
These are broad, shallow depressions that can give the skin an uneven or wavy appearance.
They are often associated with fibrous bands tethering the skin to deeper tissue.
Subcision may be particularly useful for selected rolling scars.
Boxcar Scars
These scars are depressed areas with relatively defined edges and may be shallow or deeper.
Depending on their depth and characteristics, treatment may involve RF microneedling, resurfacing procedures, subcision or other techniques.
Ice Pick Scars
These are narrow and relatively deep scars.
TCA Cross is one technique that may be considered for selected ice pick and other very focal deep scars.
Mixed Scarring
Many patients have more than one scar type. In such cases, a combination treatment plan may provide a more comprehensive approach.
What Is Subcision?
Subcision is a minimally invasive procedure used primarily for depressed acne scars that are tethered to deeper tissue.
A small needle or specialized instrument is inserted beneath the scar to release fibrous bands that pull the skin downward.
By releasing these connections, the depressed area may become less tethered and appear more level with the surrounding skin.
Subcision is often considered for:
- Rolling scars.
- Selected tethered boxcar scars.
- Depressed scars with clear underlying fibrous attachments.
In some cases, subcision may be combined with another treatment to further improve the surface texture.
What Is TCA Cross?
TCA Cross is a focal chemical treatment in which a high-concentration trichloroacetic acid (TCA) solution is carefully applied to the base of selected acne scars.
The goal is to stimulate controlled healing and new collagen formation within the scar.
TCA Cross is particularly associated with treatment of:
- Ice pick scars.
- Small, deep atrophic scars.
- Certain sharply defined depressed scars.
Because concentrated TCA can injure normal skin if improperly applied, the technique should be performed by an appropriately trained medical professional.
What Is RF Microneedling?
RF Microneedling combines tiny needles with controlled radiofrequency energy.
The needles create controlled micro-injuries, while RF energy delivers heat into targeted layers of tissue. This can stimulate remodeling and collagen production.
RF microneedling may be used to improve:
- Uneven skin texture.
- Mild to moderate atrophic acne scars.
- Skin firmness.
- Certain rolling and boxcar scars.
- Overall skin quality.
Treatment depth and energy settings should be individually adjusted according to the patient's skin and scar characteristics.
Which Treatment Is Best for Acne Scars?
There is no universal best treatment.
Subcision
Often considered when scars are tethered to deeper tissue, particularly rolling scars.
TCA Cross
Often considered for small, deep, sharply defined scars, especially ice pick scars.
RF Microneedling
Often considered for broader textural irregularities and atrophic scarring, while also addressing overall skin texture and firmness.
Many patients have mixed scarring, so the most effective strategy may involve more than one technique.
Can Treatments Be Combined?
Yes. Combination treatment is common when different scar characteristics are present.
For example:
Subcision + RF Microneedling may be used when tethering and surface textural irregularity coexist.
TCA Cross + RF Microneedling may be considered when deep focal scars occur alongside broader texture irregularities.
The timing of combination treatments is individualized. In some cases, procedures are performed during separate sessions to allow the skin to heal between treatments.
Who Is a Good Candidate?
Acne scar revision may be appropriate for adults or adolescents who:
- Have stable or controlled acne.
- Have depressed or atrophic acne scars.
- Want to improve uneven skin texture.
- Have realistic expectations.
- Are medically suitable for the selected treatment.
Patients with active infections, uncontrolled inflammatory acne or certain skin conditions may need to postpone treatment.
A professional examination is important because different scar types require different techniques.
How Is Treatment Performed?
The treatment process varies by procedure.
Subcision
1. The skin is cleansed and prepared.
2. Local anesthetic is applied.
3. A needle or specialized instrument is inserted beneath selected scars.
4. Fibrous attachments are released.
5. Post-treatment care is provided.
TCA Cross
1. The skin is cleansed.
2. The TCA solution is carefully applied to the individual scar.
3. The treated areas undergo controlled chemical injury and healing.
4. The skin is allowed to recover before further sessions.
RF Microneedling
1. The skin is cleansed.
2. Topical anesthetic may be applied.
3. Needle depth and RF energy are selected.
4. The device is passed across the affected areas.
5. Appropriate post-treatment skincare is applied.
Preparation Before Treatment
The clinician may review:
- Current acne activity.
- Scar type and severity.
- Skin tone and sensitivity.
- Previous scar treatments.
- Medications and supplements.
- Tendency toward abnormal scarring.
- History of pigmentation changes.
- Cold sore history for facial procedures.
- Current skincare routine.
Patients may be advised to avoid irritating skincare products and excessive sun exposure before treatment.
The exact preparation depends on the selected procedure.
Recovery and Aftercare
Recovery varies considerably between treatments.
After Subcision
Patients may experience:
- Swelling.
- Bruising.
- Tenderness.
- Temporary firmness.
After TCA Cross
Patients may experience:
- Localized redness.
- Darkening of treated spots.
- Crusting or peeling.
- Temporary sensitivity.
The treated areas should generally be left to heal naturally rather than being picked or scratched.
After RF Microneedling
Temporary effects may include:
- Redness.
- Swelling.
- Warmth.
- Sensitivity.
- Small pinpoint marks.
- Dryness or peeling.
Aftercare commonly includes gentle skincare and careful sun protection.
When Will Results Be Visible?
Acne scar revision usually produces gradual improvement rather than an immediate transformation.
The appearance of scars may improve as:
- Swelling resolves.
- Fibrous attachments are released.
- Collagen is remodeled.
- New tissue forms.
- The skin gradually becomes smoother.
For RF microneedling and other collagen-stimulating treatments, improvement can continue over several weeks or months.
TCA Cross and subcision may also require multiple sessions depending on scar depth and response.
How Many Sessions Are Needed?
The number of sessions varies according to:
- Scar type.
- Scar depth.
- Number of scars.
- Skin type.
- Treatment technique.
- Individual healing response.
- Desired level of improvement.
Some patients may need a series of treatments performed at planned intervals.
A realistic treatment plan focuses on progressive improvement rather than complete removal of every scar.
Possible Risks and Side Effects
Potential effects vary by treatment.
Subcision
- Bruising.
- Swelling.
- Pain or tenderness.
- Bleeding.
- Infection.
- Temporary or persistent numbness.
- Irregularities or recurrence of tethering.
TCA Cross
- Irritation.
- Prolonged redness.
- Pigment changes.
- Scarring if improperly performed.
- Burns or injury to surrounding skin.
RF Microneedling
- Redness.
- Swelling.
- Bruising.
- Pigment changes.
- Infection.
- Burns or other thermal injury if inappropriate settings are used.
People with darker skin tones may have a greater risk of post-inflammatory hyperpigmentation after some acne-scar procedures, so treatment parameters and aftercare should be carefully individualized.
A Message to Our Patients
Acne and acne scar revision requires an individualized approach because scars differ significantly in depth, shape and underlying structure.
Subcision, TCA Cross and RF Microneedling each address different aspects of acne scarring. In carefully selected patients, combining techniques may provide a more comprehensive improvement than relying on a single procedure.
Our specialists evaluate the type and severity of acne scars, assess skin characteristics and develop a personalized treatment plan with realistic expectations for improvement.
Frequently Asked Questions
Can acne scars be completely removed?
Most acne-scar treatments aim to significantly improve the appearance of scars rather than completely erase them. The degree of improvement varies according to scar type, depth and individual healing.
What is the best treatment for rolling acne scars?
Rolling scars are often associated with fibrous tethering, so subcision may be an important treatment option. Additional procedures such as RF microneedling may be used to improve surface texture.
What is the best treatment for ice pick scars?
TCA Cross is commonly considered for selected deep, narrow scars such as ice pick scars. Other procedures may be appropriate depending on the individual scar.
Can RF Microneedling treat acne scars?
Yes. RF microneedling may improve the appearance of certain atrophic acne scars while also improving overall skin texture and firmness.
Can Subcision and RF Microneedling be combined?
Yes. They address different components of scarring and may be combined in appropriately selected patients, either during the same treatment plan or in separate sessions.
Can TCA Cross and RF Microneedling be combined?
Yes. They may be included in a comprehensive treatment plan when both focal deep scars and broader textural irregularities are present.
Does acne need to be treated before scar revision?
Active acne should generally be controlled first, because ongoing inflammation can create new scars and interfere with the treatment plan.
Is acne scar revision painful?
The level of discomfort varies. Local or topical anesthesia may be used depending on the procedure.
How long does recovery take?
Recovery ranges from minimal downtime to several days or longer depending on the technique, treatment intensity and individual healing.
Can acne scar treatments cause pigmentation?
Yes. Some procedures can cause temporary or persistent pigment changes. This risk is particularly important to consider in darker skin types.
How many treatments will I need?
There is no universal number. Many patients require several sessions because acne scars are structural and often respond gradually to treatment.
Can these procedures be used on all skin types?
Many acne-scar treatments can be adapted to different skin types, but the technique and settings should be individualized to reduce the risk of pigmentation and other complications.
When should I expect to see results?
Improvement generally develops progressively as the skin heals and collagen remodeling occurs. Results may continue to improve for several months after a treatment course.