Treatment guide · Acne Care

TCA CROSS in Seoul

A targeted acid technique that treats narrow, deep acne scars one by one to help them fill in over several sessions.

Ask the clinic for: TCA 크로스 (여드름 흉터 도트 필링)

TCA CROSS explained

CROSS stands for Chemical Reconstruction of Skin Scars. It is a doctor-performed technique for ice pick and narrow boxcar acne scars, and also for enlarged pores in some cases.

How TCA CROSS works

Using a fine wooden applicator or needle tip, the doctor presses a drop of strong TCA, often 50–100%, into the bottom of each scar only. The acid causes a controlled injury that turns the spot white (frosting), then heals with new collagen that gradually raises the scar floor. Because only the scar is treated, the surrounding skin heals normally.

Who TCA CROSS is for

• Ice pick acne scars
• Narrow, deep boxcar scars
• Many small scars across the cheeks
• People wanting a lower-cost option before or alongside laser

Who should avoid TCA CROSS

• Wide rolling scars, which suit subcision
• Active acne or infection in the area
• Recent isotretinoin use, unless the doctor approves
• People prone to keloids
• Darker skin tones without a doctor experienced in pigment risk

What happens at the appointment

1. Doctor assessment and marking of suitable scars
2. Skin cleaned and degreased
3. TCA dotted precisely into each scar
4. Frosting checked, then the acid neutralised or left to settle
5. Ointment applied and aftercare explained

Aftercare and flying home

• Let small scabs fall off on their own in 5–7 days
• Apply the ointment or moisturiser the clinic recommends
• Use strict sun protection for several weeks
• Avoid makeup on the dots for 2–3 days
• Wait 4–6 weeks before the next session

Side effects and risks

• Stinging during application
• Small dark scabs and redness for about a week
• Darker marks, especially on darker skin or with sun
• Rarely, a wider scar if too much acid spreads

How much does TCA CROSS cost in Seoul?

₩100,000–₩400,000 (about US$75–300) — Price depends on the number of scars, the area and whether it is combined with laser or subcision in a package. Some clinics price per session, others per scar. All prices are estimates and change with promotions.

Why get TCA CROSS in Korea?

Seoul dermatology clinics see many acne scar patients and often combine TCA CROSS with fractional laser, subcision and boosters. Sessions are usually more affordable than in many Western countries.

Frequently asked questions

How much does TCA CROSS cost in Seoul?

TCA CROSS in Seoul usually costs about ₩100,000–₩400,000 per session. The number of scars and any added laser change the price.

Does TCA CROSS hurt?

It stings sharply for a few seconds per scar. Most people tolerate it without numbing, and the sting fades quickly.

How many TCA CROSS sessions do I need?

Most people need 3–5 sessions, 4–6 weeks apart. Improvement is gradual, and each session raises the scars a little more.

What is the downtime, and when can I fly?

Expect small dark scabs for 5–7 days. You can fly during this time, but plan photos and events after the scabs fall off.

Is TCA CROSS safe?

It is safe when done by an experienced doctor. The main risks are dark marks and, rarely, a wider scar if the acid spreads beyond the scar.

Is TCA CROSS the same as a TCA peel?

No. A TCA peel uses weaker acid over the whole face. TCA CROSS uses much stronger acid placed only inside individual scars.

Where to get it in Seoul

Foreigner-friendly clinics cluster around Gangnam, Sinsa–Apgujeong–Cheongdam and Myeongdong. Tap a number to zoom in, then tap a pin to ask the clinic on WhatsApp whether they offer this treatment and for a quote.