Quick answer: Pico laser can lighten melasma, but dermatologists treat it as one part of a plan, not a cure on its own. The usual approach in Seoul is strict sun protection, prescription topicals and sometimes oral tranexamic acid, plus a series of low-energy pico or laser toning sessions. Aggressive laser settings can make melasma worse, so gentle, repeated treatment and maintenance matter more than a single strong session.
Why melasma is hard to treat
Melasma is a chronic pigment condition, usually appearing as brown patches on the cheeks, forehead and upper lip. It is driven by several factors at once: UV and visible light, hormones (pregnancy, contraceptive pills), genetics, heat and inflammation, and changes in the small blood vessels of the skin. Because the triggers continue, melasma tends to come back even after it clears.
How pico laser works on pigment
Picosecond lasers deliver energy in pulses lasting trillionths of a second. That creates a strong photoacoustic effect that breaks pigment into very fine particles, which the body then clears. Compared with older Q-switched lasers, picosecond pulses can break pigment with less heat, which may lower the risk of irritation in sensitive, pigment-prone skin.
For melasma, clinics use low-fluence "pico toning": many gentle passes over the whole face rather than high-energy spot treatment.
What dermatologists recommend
- Daily sun protection: broad-spectrum SPF 50 with iron oxides (tinted) to block visible light, reapplied, plus a hat
- Topicals: options such as hydroquinone, tranexamic acid, azelaic acid, niacinamide or a prescribed triple-combination cream
- Oral tranexamic acid: sometimes prescribed for stubborn melasma after screening for clotting risk
- Laser toning: a series of low-energy pico or Q-switched sessions, typically one to two weeks apart for five to ten sessions
- Maintenance: occasional sessions and continued sun protection, especially in summer
Risks of the wrong approach
Melasma skin is easily provoked. High-energy settings, frequent toning without breaks or heat-based treatments can cause rebound darkening or, after many sessions, white spots (mottled hypopigmentation). A careful clinic will check your skin before each session and adjust or pause if it reacts.
Is pico laser right for you?
It is worth considering if topical treatment and sun protection alone have plateaued. It is less suitable if your skin is currently inflamed, sunburned or tanned, if you are pregnant, or if you cannot commit to several visits. Some brown patches are not melasma at all (for example sun spots or Hori's naevus), which need different settings, so a proper diagnosis comes first.
Planning treatment as a visitor
Because melasma needs a series, a single session on a short trip gives limited results. If you are in Seoul for one to two weeks, you may fit two or three sessions and leave with a home-care plan. Ask the doctor for written settings and products so you can continue with a dermatologist at home.
Downtime and aftercare
- Mild redness for a few hours
- Makeup usually the same or next day
- Gentle skincare, no scrubs or strong acids for a few days
- Strict sunscreen use between sessions
Price
Pico toning is priced per session, with packages of five or ten sessions. Prescriptions and topicals are extra. See our
price guide for current KRW ranges.
Frequently asked questions
Can melasma be cured permanently?
Not reliably. It can be controlled and lightened, but it tends to recur with sun and hormones.
How many sessions will I need?
Usually five to ten for a visible improvement, then maintenance.
Is pico better than Q-switched laser toning?
Both can work at low energy. Pico may be gentler for some skin, but the doctor's settings and plan matter more than the device name.
This article is general information and does not replace a consultation with a doctor. Last reviewed: October 2026.
