What acne scars are and why they form

Acne scars are permanent marks left behind after severe acne heals. They form when acne causes deep inflammation in the skin. As the skin repairs itself, it does not always rebuild smoothly — sometimes it creates a depression (a pitted or indented scar) or raises scar tissue above the skin surface (a raised or hypertrophic scar).

Not all acne leaves scars. Scars typically develop only after inflammatory acne — the kind with deep cysts and nodules — rather than surface-level blackheads or whiteheads. The deeper the inflammation and the longer it goes untreated, the more likely scarring will occur. Picking or squeezing acne also increases the risk of permanent marks.

Once acne scars form, they do not fade on their own. However, several treatments can reduce their appearance or smooth the skin texture. The right choice depends on the scar type, how deep it is, your skin tone, and what you want to achieve.

Key Takeaways

  • Acne scars form from deep inflammation and do not fade without treatment, but several options can reduce their appearance.
  • Dermatologists use different treatments for different scar types: laser therapy for pitted scars, chemical peels for surface marks, and injectable fillers for temporary smoothing.
  • Microneedling and subcision are procedures that work by triggering the skin to rebuild collagen and fill in depressed scars.
  • Results vary widely depending on scar depth, skin tone, and the treatment used, and multiple sessions are often needed.
  • Preventing new scars by treating acne early and avoiding picking is simpler than treating scars after they form.

Laser treatments for acne scars

Laser therapy is one of the most common treatments for pitted acne scars. The laser removes the top layer of skin or creates controlled damage that triggers the skin to rebuild itself with smoother texture. Different laser types work in different ways, and a dermatologist will choose based on your scar type and skin tone.

Ablative lasers (such as CO2 or erbium lasers) remove the outer skin layer entirely. They are effective but require downtime — your skin will be red, swollen, and peeling for one to two weeks afterward. Non-ablative lasers work beneath the skin surface without removing the top layer, so recovery is faster, but results are usually less dramatic. You may need multiple sessions spaced weeks apart.

Laser treatment works best on lighter skin tones. People with darker skin are at higher risk of discoloration or scarring from the laser itself, so a dermatologist experienced in treating darker skin should perform the procedure. Cost varies widely — typically $500 to $3,000 per session depending on the laser type and area treated.

Microneedling and subcision

Microneedling uses a device with tiny needles to create controlled punctures in the skin. This triggers your body to produce new collagen, which can fill in depressed scars over time. The procedure takes 30 minutes to an hour, and your skin will be red and slightly swollen for a few days. Most people need three to six sessions spaced four to six weeks apart to see results.

Subcision is a different approach used for deep, tethered scars — scars that are attached to tissue beneath the skin. A dermatologist uses a needle or small blade to break the scar tissue's connection to deeper layers, allowing the skin to rise and flatten. Subcision is often combined with other treatments like microneedling or fillers for better results.

Both procedures are less invasive than laser therapy and carry lower risk of complications. Microneedling typically costs $200 to $700 per session, while subcision ranges from $1,500 to $3,000 depending on the extent of scarring. Results develop gradually over weeks and months as collagen rebuilds.

Chemical peels and topical treatments

Chemical peels use acids to remove the outer layer of skin, which can improve the appearance of shallow scars and uneven skin texture. Peels range from light (using salicylic acid or glycolic acid) to deep (using phenol), with stronger peels requiring more recovery time. Light peels can be done in a dermatologist's office and require minimal downtime, while deep peels are less common and carry more risk.

Chemical peels work best on surface-level scarring and discoloration rather than deep pitted scars. You may need multiple sessions. Cost ranges from $150 to $300 for a light peel to $1,000 or more for a deeper treatment.

Topical treatments — creams and serums applied at home — cannot remove scars but may slightly improve appearance over time. Products containing retinoids, vitamin C, or niacinamide can improve skin texture and reduce redness around scars. These are inexpensive ($20 to $100) but produce modest results and work best alongside professional treatments rather than alone.

Injectable fillers for temporary scar smoothing

Dermal fillers are injected under the skin to raise depressed scars and make them less noticeable. Common fillers include hyaluronic acid (Restylane, Juvéderm) and calcium hydroxylapatite (Radiesse). The procedure takes 15 to 30 minutes, and results are visible immediately, though swelling may take a few days to subside.

The main drawback is that fillers are temporary — they are absorbed by the body over three to twelve months depending on the type. You will need repeat injections to maintain results. Cost typically ranges from $300 to $800 per injection session.

Fillers work well for people who want to see results quickly or who are not ready for more invasive procedures. They are also a good option for people with darker skin tones, since they do not carry the discoloration risk that some laser treatments do. However, they do not permanently change the scar — they only mask it temporarily.

Combination treatments and what to expect

Many dermatologists combine treatments for better results. For example, subcision followed by microneedling, or laser therapy combined with fillers, can address scars from multiple angles. Your dermatologist will recommend a plan based on your specific scars, skin type, and goals.

Results take time. Most treatments require multiple sessions spaced weeks or months apart, and final results may not be visible for three to six months as collagen rebuilds. Improvement is usually gradual rather than dramatic — most treatments reduce scar appearance by 50 to 75 percent rather than erasing scars completely.

Recovery varies by treatment. Laser therapy and deep chemical peels require the most downtime. Microneedling and fillers have minimal downtime. Plan to avoid sun exposure and strenuous exercise for at least a week after any procedure, and use sunscreen daily during healing.

Preventing new scars from forming

Treating acne early is the most effective way to prevent scarring. If you have inflammatory acne (cysts, nodules, or deep pustules), see a dermatologist rather than waiting for it to clear on its own. Early treatment with prescription medications like isotretinoin (for severe acne), oral antibiotics, or topical retinoids can prevent the deep inflammation that leads to scars.

Avoid picking, squeezing, or popping acne, even when tempting. Picking increases inflammation and damage to deeper skin layers, making scarring more likely. If you struggle with picking, ask your dermatologist about behavioral strategies or treatments that reduce the urge.

Protect healing acne from sun exposure. UV light can darken acne marks and make them more noticeable. Use sunscreen daily and avoid tanning beds.

Frequently Asked Questions

How much do acne scar treatments cost?

Cost varies widely by treatment type and location. Laser therapy ranges from $500 to $3,000 per session, microneedling from $200 to $700, chemical peels from $150 to $1,000, and fillers from $300 to $800. Most people need multiple sessions, so total cost can be $1,500 to $5,000 or more. Insurance typically does not cover scar treatments since they are considered cosmetic.

Can acne scars go away on their own?

No. Acne scars do not fade without treatment. Over many years, they may become slightly less noticeable as skin naturally changes, but they will not disappear. The earlier you treat them, the more options you have and the better the results tend to be.

Which treatment works best for deep pitted scars?

Deep pitted scars usually respond best to a combination of treatments. Subcision breaks the scar's attachment to deeper tissue, and microneedling or laser therapy then triggers collagen rebuilding. Fillers alone do not work well for very deep scars because they cannot fill the entire depression. A dermatologist can assess your scars and recommend the best approach.

Is acne scar treatment safe for dark skin?

Some treatments carry higher risk for people with darker skin tones. Ablative lasers and certain chemical peels can cause discoloration or scarring. Microneedling, subcision, and fillers are generally safer options. Work with a dermatologist experienced in treating darker skin to avoid complications.

How long does it take to see results?

Results depend on the treatment. Fillers show results immediately but are temporary. Laser therapy, microneedling, and chemical peels require three to six months to show full results as collagen rebuilds. Most treatments need multiple sessions spaced weeks apart, so the entire process typically takes three to nine months.