Acne scars (여드름 흉터, yeodeureum hyungteo) are one of the most common reasons visitors book a Korean dermatology clinic. Treatment is usually a series of sessions, and the right choice depends on the type of scar, your skin tone and your schedule. This guide explains what the research says about one common option, fractional lasers, and what to ask before you agree to a package.
At a glance
| Details | |
|---|---|
| What it usually means | Fractional lasers, microneedling with radiofrequency, needling, peels or a combination, spread over several sessions |
| Korean words to say | 여드름 흉터 (acne scar), 함몰 흉터 (depressed scar), 프락셀 (Fraxel, a fractional laser brand) |
| Who should decide | A doctor who examines the scar type and your skin tone first |
| How clinics usually quote it | By session or in a multi-session package. Ask what happens if the plan changes. |
Get the scar type assessed first
Scars differ in shape and depth, and treatments work differently on each. A doctor should look at your skin in person and tell you which type you have. If you still have active acne, ask whether it should be controlled first.
What the research says about fractional lasers
A systematic review of seven studies of fractional CO2 laser for acne scars found that most patients had a 30% to 70% improvement in the appearance of their scars, with no worsening in any study. The review concluded that the laser is effective and generally safe, and that results depend on scar type, scar depth and treatment settings. It also lists limits: small studies, mostly short follow-up of up to six months, and different scoring scales that make results hard to compare. The authors call for long-term monitoring.
Risks to ask about
- Darkening of the skin (post-inflammatory hyperpigmentation). In the review it was usually temporary and resolved within a few weeks. One study reported darkening lasting more than a month in six patients, who needed treatment. Ask how the clinic lowers this risk for your skin tone.
- Redness and swelling. Redness was temporary but could last up to several weeks. One study described stinging for up to an hour and redness or swelling for 24 to 48 hours.
- Downtime is different for each person. Ask what your face is likely to look like on the day after, and plan around your flight and your plans.
Questions to ask the clinic
- What type of scars do I have, and why this treatment?
- Which device exactly, and at what depth or intensity? “Laser” and “RF” cover many different machines.
- How many sessions and how far apart? Ask whether the sessions can fit inside your trip, and what follow-up is possible after you leave.
- How do you reduce the risk of dark marks on my skin tone?
- What sun protection and home care do I need, and for how long?
- What will it look like for the first days, and who do I contact if it looks worse?
- I get cold sores. Should I take preventive medicine?
Red flags
- A promise to “remove” scars or a guaranteed percentage of improvement.
- A package of many sessions sold at the first visit, with no review point.
- No examination of your skin before a treatment is chosen.
- A treatment started when the skin is infected or irritated.
Warning signs after treatment
- Increasing pain, pus, a bad smell or fever.
- Skin that stays very dark, or blistered or crusted areas that are not healing.
Contact the clinic first, and read what to do if a skin treatment goes wrong.
Useful Korean words
| Korean | Romanised | Meaning |
|---|---|---|
| 여드름 | yeodeureum | Acne |
| 흉터 | hyungteo | Scar |
| 함몰 흉터 | hammol hyungteo | Depressed (atrophic) scar |
| 프락셀 | peurakssel | Fraxel (fractional laser brand) |
| 레이저 | reijeo | Laser |
| 색소침착 | saekso chimchak | Pigmentation, dark marks |
| 자외선차단제 | jaoeseon chadanje | Sunscreen |
| 회차 | hoecha | Session number |
| 부작용 | bujagyong | Side effects |
Frequently asked questions
How many sessions do I need?
It depends on the scars and the device. Ask for a plan with a review point instead of a fixed large package.
Is it safe for darker skin tones?
The review above lists temporary and sometimes longer-lasting darkening as a risk. Ask the doctor how they manage it on your skin tone, and let the doctor decide.
General information, not medical advice. Devices, products and rules change; confirm details with a licensed doctor. Before you book, check the clinic on our map, build a visit card to show the doctor, and read how to read a Korean clinic estimate. See the About page for our sources and corrections policy.