A skin whitening clinic in Korea works on uneven tone, such as sun spots, freckles and melasma, and aims to bring patchy areas closer to the rest of your skin, not to change your natural shade. The plan depends on the pigment problem. Sun spots are fixed marks that often fade with a targeted laser or light session, while melasma is a recurring, hormone- and heat-sensitive patch that needs a slower mix of creams, gentle devices and strict sun protection. Two reviews of clinical trials describe what each approach achieved and its side effects. Results vary from person to person.
Guide
Spots and patches respond in different ways
A sun spot, or solar lentigo, is a flat brown mark with a clear edge, usually on the cheeks, hands or forearms after years of sun. Melasma is different: soft-edged, often symmetrical patches on the cheeks, forehead or upper lip that darken with sun, heat and hormonal change.
That difference shapes the visit. A spot can be targeted directly, and a clear mark may lighten after one or two sessions. Melasma tends to flare if heated too hard, so its plan is gentler and longer. Many faces carry both, so the first step is a close look under good light.
Guide
What the melasma trials compared
Liu and colleagues pooled 59 randomized controlled trials in a 2021 network meta-analysis in Frontiers in Medicine, comparing 14 common melasma therapies against placebo. Against placebo, the Q-switched Nd:YAG 1,064 nm laser, intense pulsed light and ablative fractional laser ranked highest for effect, with triple combination cream and oral tranexamic acid also performing well.
Side effects were common. Liu and colleagues reported side-effect rates from about 10% for tretinoin to about 52% for microneedling, and combination therapy came out ahead of single therapy in 27 of 31 studies that tested it. They also stress that melasma often returns, so an early response starts a maintenance plan.
Guide
What the sun spot trials compared
Mardani and colleagues reviewed 41 clinical trials with 3,234 patients in the Journal of Cosmetic Dermatology in 2025. The review reported success rates of about 68% to 93% for picosecond laser, about 75% to 90% for intense pulsed light, and about 36% to 77% for Q-switched laser. A mequinol and tretinoin cream was the topical option that worked most often.
Most adverse events were mild and short-lived. Pulsed dye laser and intense pulsed light were less often followed by darkening after inflammation, while freezing with cryotherapy was linked to more severe side effects. The review concluded that laser therapy appears more effective than the other options it covered, and that larger trials are still needed.
| Feature | Sun spots | Melasma |
|---|---|---|
| Typical look | Sharp-edged single marks | Soft-edged, symmetrical patches |
| Main triggers | Long-term sun exposure | Sun, heat, hormonal change |
| Usual approach | Targeted laser or light | Gentle toning, light peels, strict sun protection |
| Common pace | One or a few sessions | A course, then maintenance |
| Main risk to discuss | Temporary darkening after treatment | Rebound darkening, recurrence |
Guide
Judging progress by evenness, not by shade
The useful question after a course is whether the patches now blend with the surrounding skin, not whether the face looks lighter overall. Ask for photos at the first visit and each follow-up under the same light and angle, without makeup. Melasma trials score severity by area and darkness; at home, simply note which zones changed and which did not.
Be wary of a plan that promises an overall lighter complexion. Pushing for that can leave pale dots after repeated laser sessions, or irritation from strong creams used too long. A clinic that names the pigment type, target zones and the risk of darkening is describing tone evening, which is what the research measured.
Guide
Keeping the result after you fly home
Pigment comes back with sun, so the plan you carry home matters as much as the sessions in Korea. Daily broad-spectrum sunscreen, a hat in strong sun, and avoiding saunas in the first weeks all help, especially with melasma.
- Ask how many weeks apart toning sessions are spaced, and when progress is reviewed.
- Write down the device and settings used, so a doctor at home can continue or adjust the plan.
- Plan a pause before a beach holiday, since fresh treatment and strong sun combine badly.
- Seek care if a treated area turns darker, blisters or stays red longer than you were told to expect.
Evidence
Research behind this page
- Comparison of the Efficacy of Melasma Treatments: A Network Meta-Analysis of Randomized Controlled TrialsFrontiers in Medicine · 2021 · doi:10.3389/fmed.2021.713554
Network meta-analysis of 59 randomized trials comparing 14 melasma therapies; Q-switched Nd:YAG laser, intense pulsed light and ablative fractional laser ranked highest against placebo, and combination therapy came out ahead of single therapy in most studies that tested it.
- Treatment of Solar Lentigines: A Systematic Review of Clinical TrialsJournal of Cosmetic Dermatology · 2025 · doi:10.1111/jocd.70133
Systematic review of 41 clinical trials with 3,234 patients finding laser and light therapies the most effective options for solar lentigines, with mostly mild, transient side effects.
FAQ
Questions about aesthetic clinics in Hongdae
Can treatment lighten my whole face by a shade or two?
Clinic treatment is designed to fade extra pigment, not to lower the natural color of healthy skin. Lasers, light and lightening creams act on spots and patches where melanin has built up, so the face looks more even rather than paler. Chasing an overall lighter shade raises the risk of irritation and blotchy pale dots. A realistic goal is patches that match the skin around them.
How can I tell whether my brown patches are melasma or sun spots?
Only an examination confirms it, but the pattern gives strong clues. Sun spots are usually single, sharp-edged marks on sun-exposed skin, while melasma forms soft-edged, mirror-image patches on the cheeks, forehead or upper lip. Melasma often darkens in summer, during pregnancy or with hormonal medicine. Many people have both types, which is why the doctor maps the face before choosing a device or cream.
Does a pigment laser suit skin that tans easily?
Often yes, but skin that tans easily needs lower energy, wider gaps between sessions and sometimes a test spot first. More active pigment cells react to heat by darkening, so an aggressive pass can leave the area darker than before. In the 2021 network meta-analysis by Liu and colleagues in Frontiers in Medicine, the Q-switched Nd:YAG 1,064 nm laser ranked highly for melasma. Ask how settings change for your skin type before agreeing to a course.
Why can a pigment laser make some spots look darker at first?
Treated sun spots often darken and form a thin crust for several days before flaking off, which is an expected step. A different problem is darkening after inflammation, which can follow heat injury and last weeks, and is more common in skin that tans easily. In the 2025 review by Mardani and colleagues, pulsed dye laser and intense pulsed light were less often linked to it. Sun protection and gentle aftercare lower the risk.
Will melasma stay away after a course of treatment?
Melasma often returns, so a course works as control rather than a cure. Sun, heat and hormones keep driving pigment after the sessions end. Daily broad-spectrum sunscreen, a gentle skincare routine and occasional follow-up care help hold the improvement. Expect some seasonal flare-ups, and plan a review with a doctor if patches darken again during the summer months or after a pregnancy.