Treatment guides from a clinic in Myeongdong, Seoul

Freckles and Sun Spots

Small brown marks on the face come from several different processes, and they clear at very different rates. Sorting out which kind you have is most of the decision, because one type responds to a couple of sessions and another needs managing for years.

Scattered flecks of darker tone across pale stone

What causes brown marks on the face

They are not all the same thing, and the ones that look alike from a metre away behave very differently up close.

Inherited freckles. Small, light brown, often across the nose and cheeks, present since childhood. They darken in summer and fade in winter, because the pigment cells in them respond strongly to light.

Sun spots. Larger, flatter and more defined, these accumulate on the areas that have had the most exposure over decades — the cheekbones, temples, the backs of the hands. They do not fade in winter.

Raised, rough growths. Some brown marks that appear with age are slightly raised and have a textured surface. They are a different category from flat pigment and are approached differently, which is why they need looking at rather than lasering by assumption.

Pigment left after inflammation. A spot, a scratch or an irritated patch can leave a brown mark behind that is not related to sun at all. Most fades over months.

Melasma. Soft-edged, symmetrical patches rather than discrete spots, driven by light, heat and hormones. It is easily mistaken for a cluster of sun spots and it responds to the opposite approach — gentle and gradual rather than decisive. The laser guide explains why the settings used for it are deliberately gentler.

Underlying all of the above is cumulative ultraviolet exposure. Whatever else is happening, sun is the reason most of these marks exist and the reason they return.

How to tell which cause you have

Two observations are worth making before you go anywhere. Do the marks fade noticeably in winter and darken in summer, or do they stay the same year round? And can you feel them — is the surface smooth, or slightly raised and rough under a fingertip? Those two answers already separate most of the categories above.

A consultation examines the marks under magnification and specialised light, which shows how deep the pigment lies and whether the border is as sharp as it looks. It also considers your history of sun exposure and burning, how your skin behaves after inflammation, and whether anything present needs a medical assessment rather than a cosmetic one. That last check is routine and it comes first.

What addresses each cause

What is causing it What the treatment category is
Inherited freckles Pigment-targeting laser sessions, with protection to delay their return
Sun spots Pigment-targeting lasers, often clearing in a small number of sessions
Generally uneven tone alongside the spots Toning laser courses across the whole area
Raised, textured growths Assessment first; treatment is a different technique from flat pigment
Pigment left after inflammation Time, protection and gentle topical treatment, some of it prescribed by a doctor
Soft-edged symmetrical patches Cautious management rather than clearance — the approach for melasma
Dullness and rough surface on top of the pigment A clinic skin care programme alongside the laser work

What does not help

Skin boosters and filler for pigment. Both are good treatments in the wrong category here. Injectables address skin quality and volume, not colour.

Lifting treatments. Ultrasound and radiofrequency devices do not treat pigment, and the heat they deliver is unhelpful if any part of the picture turns out to be melasma.

Scrubbing and strong at-home acids. Irritation makes pigment worse in skin inclined to produce it.

Whitening facials as the main treatment. They can brighten the surface for a while. They do not remove a sun spot.

Treating by assumption. A course aimed at spots, applied to melasma, is the most common way this concern is made worse.

Realistic timeline and how many sessions

Discrete sun spots often need only one to three sessions, with darkening for three to seven days after each and flaking afterwards. Inherited freckles usually respond quickly and then need maintenance as they reappear. Overall tone evening is a course of three to five sessions, two to four weeks apart.

Daily sun protection is what decides whether any of it lasts. Without it, you are paying to keep pace.

What to ask at the consultation

  1. Which of my marks are sun spots, which are freckles, and is any of this melasma?
  2. Is there anything here you would want examined before we treat it?
  3. How many sessions for the spots, and what is realistic for my overall tone?
  4. What will the skin look like for the week after, and when can I be outdoors normally?
  5. What do I use daily to keep the result, starting immediately?

FAQ

Do freckles come back after laser treatment?

Genetic freckles often do, because the tendency is inherited and sun exposure brings them out again. Sun spots that have been fully cleared tend to stay clear, provided new ones are not being created.

Why do the spots go darker after treatment?

Treated pigment commonly darkens for several days and then flakes away. That sequence is the treatment working, and picking at it is the main way people end up with a mark where the spot was.

Can I have this done in summer?

It is possible, but sun exposure immediately afterwards is the main cause of pigment returning. A trip built around long days outdoors is a reason to postpone rather than push on.

What if a spot has changed recently?

Any mark that has changed in size, shape or colour, or that itches, crusts or bleeds, should be examined by a doctor before any cosmetic treatment is considered. That assessment comes first.