Comparing 3 Acne Scar Treatments: Which is Right for My Scars?
- Even with the same acne scars, treatments can differ completely based on a 0.5mm difference in depth.
- Treatments vary depending on the scar type: boxcar, rolling, or ice pick.
- Before considering recovery time and cost, you should first look at the depth of your scars.
Information as of October 2026
Criteria for Choosing Lasers, Microneedling, and Fillers
- 3 Types of Scars
- 3-14 Days Recovery Period
- 3-6 Months to Notice Effects
If You're Looking for Treatments Because Scars Make You Sigh When You Look in the Mirror
Bumpy skin reflected in the mirror after cleansing. You've searched for lasers, microneedling, and fillers, but if you don't know where to start, this article will provide the criteria.
All you need to check are the type and depth of your scars, and the treatment will be decided automatically.
Acne scar treatments broadly fall into three categories: fractional lasers, microneedling, and scar fillers.
Each has a different operating principle, target depth, and recovery period. Even for the same acne scar, a 0.5mm difference in depth can lead to a completely different choice.
Treatments by Scar Type, With One Key Criterion
Box Scars: These are depressed scars with sharp, angled edges. If the depth is 0.3-0.5mm, fractional laser is the top choice.
This method works by finely ablating the entire skin surface to induce collagen regeneration.
Rolling Scars: These have a gentle U-shaped curve. If the depth is 0.5-1mm, microneedling is effective.
The principle is to stimulate the deep dermis with fine needles to break down fibrous tissue. Ice-pick scars are narrow, deep V-shaped indentations.
If the depth is 1mm or more, it's more realistic to immediately fill the volume with a filler.
Key Point Scar depth can be checked in under a minute at a dermatology clinic using a Wood's lamp or optical diagnostic device. Visual judgment has a large margin of error.
| Treatment | Target Scar Type | Depth Range | Recovery Period |
|---|---|---|---|
| Fractional Laser | Box Scar | 0.3-0.5mm | 3-5 days |
| Microneedling | Rolling Scar | 0.5-1mm | 5-7 days |
| Scar Filler | Ice-pick | 1mm or deeper | Immediate-1 day |
Recovery periods may vary depending on the intensity of the procedure and individual skin condition.
OX Quiz
Fractional laser has a faster recovery than microneedling.
Check the Answer
X Lasers cause thermal damage, resulting in redness that lasts for 5 days, while needling only causes physical stimulation, with swelling subsiding within 24 hours. Microneedling has a faster recovery.
Laser vs. Microneedling: Which Has a Faster Recovery?
Fractional lasers work by finely vaporizing the epidermis. Due to thermal damage, redness may persist for 48 hours.
Considering the shedding of dead skin cells, returning to daily activities takes about 5 days. However, the collagen regeneration effect can continue for up to 3 months (Korean Dermatological Association, 2022).
Microneedling does not cause thermal damage. It only involves physical stimulation, so swelling subsides within 24 hours, and makeup can be applied within a week.
However, the rate at which fibrous tissue is broken down is slow, so it takes 4-6 months to notice the effects. Fillers provide immediate volume but require re-treatment after 6-12 months.
How to Choose the Right Treatment for Your Scars
The first thing to check is the scar depth. If it's shallower than 0.5mm, a laser is recommended; if it's deeper, microneedling or fillers are options.
Next is your schedule. If you have an important appointment within a week, consider fillers. If you have a month's leeway, review lasers or microneedling in that order.
Costs range from 200,000-400,000 KRW for lasers, 150,000-300,000 KRW for microneedling, and 500,000-800,000 KRW for fillers. However, the number of sessions varies depending on the number and area of scars, so the total cost is determined after consultation.
Typically, lasers require 3-5 sessions, microneedling 4-6 sessions, and fillers 1-2 sessions.
- 0.5mm depth is the treatment dividing line
- 3-5 sessions for lasers vs. 4-6 sessions for microneedling
Treatment Selection Guide by Situation
Appointment within a Week [Quick Return to Normal]
- 1st Choice: Filler (Immediate return)
- 2nd Choice: Microneedling (5-7 days)
- Not Recommended: Laser (Redness lasts 5 days)
If you have an important event coming up, prioritize treatments with no thermal damage.
Wide Area with Multiple Scars [Cost-Effective]
- 1st Choice: Laser (Covers entire area)
- 2nd Choice: Microneedling (Focused on specific areas)
- Not Recommended: Filler (High cost per scar)
If you have 10 or more scars, lasers have a lower cost per session.
1-2 Deep V-shaped Scars [Immediate Results]
- 1st Choice: Filler (Immediate volume)
- 2nd Choice: Microneedling (4-6 months later)
- Not Recommended: Laser (Depth limitations)
For ice-pick scars 1mm or deeper, filler is the only option.
Misconceptions
Myth A single laser treatment completely eliminates scars.
Truth Collagen regeneration occurs in 3-month cycles, so multiple treatments (3-5 sessions) are standard. A realistic improvement after one session is 30-40%, and complete elimination may not be possible depending on depth and type.
Must Check Before Treatment
- !!If you have 3 or more active acne lesions, get treated for inflammation first!! — Risk of secondary infection during treatment
- Avoid direct sunlight for 72 hours after laser treatment — May cause hyperpigmentation
- Refrain from saunas and swimming pools for one week after microneedling — Risk of infection
Frequently Asked Questions
Which of the three treatments has the fewest side effects?
Microneedling. It has a low risk of hyperpigmentation due to the absence of thermal damage, and complications during recovery are minimal if infection is avoided. However, proper disinfection for a week after the procedure is essential.
Are the total costs of 3 laser sessions vs. 6 microneedling sessions similar?
Lasers are 100,000-200,000 KRW more expensive. The estimated cost is 300,000 KRW x 3 sessions = 900,000 KRW for lasers, and 200,000 KRW x 6 sessions = 1,200,000 KRW for microneedling, but this can be reversed depending on the scar area.
Do scars filled with filler last permanently?
No. Hyaluronic acid fillers are absorbed by the body after 6-12 months, requiring re-treatment. There are very few semi-permanent fillers approved in Korea.
References
- Guidelines for the Treatment of Acne Scars — Korean Dermatological Association, 2022
- Fractional Laser in Acne Scar Treatment — Journal of Dermatological Treatment, 2021
Lumi's Word
When it comes to scar treatments, the question isn't 'which is the latest?' but 'what is the depth of my scar?'. A 1-minute check of your scar depth with a Wood's lamp during consultation clarifies your options. Move the time you spend sighing at the mirror to the examination room.
This content is for informational purposes only and does not substitute for medical advice. Always consult with a specialist before undergoing any procedure.
