Fraxel vs CO2 Laser: Which Is Better for Acne Scars?

Quick answer: CO2 fractional laser is usually more powerful for moderate to deep acne scars because it is ablative, removing tiny columns of skin, but it needs about 5–7 days of redness and crusting. Fraxel is non-ablative, leaves the surface intact and suits mild to moderate scars and texture with 2–5 days of downtime. Choose by scar depth and how much downtime you can afford.

Fraxel is a non-ablative fractional laser that works at 1550 nm. It creates microscopic columns of heat in the dermis while the top layer of skin stays intact, prompting collagen remodeling with relatively manageable recovery. See Fraxel laser in Hongdae.

CO2 fractional laser is an ablative fractional laser at 10,600 nm. It vaporizes tiny columns of skin, which then heal from the surrounding untreated tissue. Because it physically removes tissue and heats deeper, it produces stronger resurfacing and tightening, with more downtime. Read about CO2 fractional laser in Seoul.

So Fraxel vs CO2 laser for acne scars comes down to a trade-off: more power per session (CO2) or less disruption to daily life (Fraxel).

Most faces have mixed scars, so a doctor often treats different areas with different intensity, or combines a laser with subcision and other tools. Our acne scar removal page outlines the options.

• Day 0–1: sunburn-like redness and swelling, especially around the eyes.
• Day 2–3: skin feels rough and slightly bronzed as micro-debris works out.
• Day 3–5: fine flaking; most people return to normal activities with makeup.

• Day 0–2: redness, swelling and pinpoint oozing; ointment keeps the skin moist.
• Day 3–7: fine crusting that sheds; do not pick it.
• Week 2 onward: pinkness can linger for several weeks and fades gradually; strict sun protection is essential.

For both, avoid sun, saunas and active skincare such as retinoids or acids until the doctor says your skin has recovered.

In Seoul in 2026, Fraxel typically costs about KRW 150,000–400,000 per session and CO2 fractional about KRW 100,000–300,000. A combination acne scar session including subcision or other techniques usually falls around KRW 150,000–500,000 (about US$107–357).

CO2 can look cheaper per session, but compare the full plan: some people need fewer CO2 sessions, while others prefer more Fraxel sessions to avoid a week of downtime. Price also depends on:

• Area treated and number of passes.
• Numbing, post-laser soothing and recovery products included.
• Add-ons such as exosome or Rejuran Healer to support recovery.
• 10% VAT, usually added to cosmetic procedures.

See the Fraxel laser cost guide and acne scar treatment cost guide, and compare with the current price list.

CO2 fractional can be used on Asian skin, but because it is ablative and hotter, the risk of post-inflammatory hyperpigmentation is higher than with Fraxel or gentler options. Doctors in Korea usually lower density, space sessions further apart and stress sun protection. If you tend to form raised scars, mention it; people prone to keloids need extra caution, see keloid scar care.

If you want scar improvement with less pigment risk, alternatives include pico fractional or RF microneedling. Compare them in Pico Laser vs Fraxel for Acne Scars and Potenza vs Fraxel.

Your trip length often decides between Fraxel and CO2 laser. As a guide:

1. Under 5 days in Seoul: a gentler option, or Fraxel at the very start of your stay.
2. About 1 week: Fraxel works comfortably; CO2 is possible if you can accept crusting during sightseeing.
3. 10 days or more: CO2 fractional becomes more practical, with time for a follow-up check before you fly.

Leave buffer before weddings, interviews or photos. If you plan return trips, a series of sessions spaced about 4 weeks apart (Fraxel) or longer (CO2) fits well with regular visits to Korea.

Hongdae is easy to reach: Hongik Univ. Station is on Line 2, the Gyeongui–Jungang Line and the AREX Airport Railroad, which runs directly to Incheon and Gimpo airports. Recovering nearby is simple, with pharmacies, convenience stores and cafés close by.

• Ask for English- or Japanese-speaking staff when you book.
• Many clinics take consultations by WhatsApp or KakaoTalk; send close-up scar photos and your travel dates so recovery can be planned.
• Confirm who performs the treatment, the device and number of passes, and whether 10% VAT is included.
• Check the current Hongdae clinic price list before you decide.
• Leave a buffer before your flight, especially after CO2 laser.

To prepare, read about Fraxel in Seoul, CO2 fractional laser and acne scar removal.

CO2 fractional is usually stronger per session and often preferred for moderate to deep boxcar scars. Fraxel is gentler, with less downtime and lower pigment risk, and suits mild to moderate scars and texture. The better choice depends on scar depth, skin tone and how much downtime you can accept.

Fraxel is often done as 3–5 sessions about 4 weeks apart. CO2 fractional may need fewer sessions but with longer gaps, often 1–3 months apart, to allow full healing. Deep scars may need combination treatment. The doctor sets the plan after examining your scars.

Expect about 5–7 days of redness, swelling and fine crusting after CO2 fractional, with pinkness that can linger for several weeks. Fraxel usually needs about 2–5 days. Plan sightseeing, events and flights around these windows and protect treated skin from the sun.

Flying is not dangerous, but cabin air is dry and crusting skin needs moisturizing and care, so many people prefer to wait several days. Staying in Seoul for about a week also lets the clinic check healing. Follow the doctor's aftercare instructions closely.

Numbing cream is applied before both. Fraxel feels like heat and prickling; CO2 feels hotter and more intense, with a sunburn sensation for several hours afterward. Most people tolerate both well with numbing and cooling. Tell the doctor if discomfort becomes strong during treatment.

• Pico Laser vs Fraxel: Which Is Better for Acne Scars?
• Potenza vs Fraxel: Which Is Better for Pores and Acne Scars?
• Fraxel Laser Cost in Korea: Seoul Price Guide
• Best Skin Treatments in Korea for Foreigners: Complete 2026 Guide

This guide is general information for international visitors, not medical advice. A doctor confirms suitability, dosage and number of sessions at consultation. Prices are approximate Seoul market ranges and change over time — always check the clinic's current price list. Last updated: October 2026.