UltraClear Laser in Seoul: Which Skin Concerns It Suits and How Long Recovery Takes

What kind of laser is UltraClear?

UltraClear is an ablative fractional laser made by Acclaro Medical in the United States. The name sounds technical, but the idea is simple:

• Ablative means the light actually removes a very thin amount of skin tissue.
• Fractional means it does not treat the whole surface at once. Instead, very thin beams make tiny channels close together, and the skin between them is left untouched.

Each UltraClear channel is roughly 170 µm wide, or 0.17 mm (1 µm is a thousandth of a millimeter).¹ The untouched skin acts as a base for healing, from which collagen (the protein fibers that keep skin firm) and elastic fibers are rebuilt. This is the basic idea behind every fractional laser. Compared with older lasers that resurfaced the entire face, recovery is lighter and the risk of side effects lower, but results usually come from several sessions rather than one.¹

How UltraClear is applied

Replay

1. 1Whole face, shallowthe shallow mode skims the outermost skin — texture and dullness
2. 2Deep only where neededdepressed acne scars and lines around the mouth get deep-mode channels into the dermis
3. 3Where melasma may be mixed init can darken after laser, so diagnosis comes first

What is different about 2,910 nm?

A laser's wavelength decides which part of the skin absorbs it most easily. At 2,910 nm, UltraClear sits in the range where water in the skin absorbs light most strongly (2,900-3,100 nm). So tissue can be removed while leaving less heat behind in the surrounding skin.³

In the studies, the band of heat damage around each channel was narrower than with a CO2 laser, which spreads heat widely. The authors link this to the shorter redness and recovery they observed.¹⁴ The light travels through an optical fiber and can pulse (fire in short bursts) up to 5,000 times per second. This lets one device do anything from a light polish of the outermost layer of skin to thin channels deep in the dermis.¹⁴

Fine channels, healing from the skin between

Replay

1. 1Fine channelsbeams about 170 µm wide make small, closely spaced holes
2. 2Skin between keptthe skin between the holes is left intact — the base for healing
3. 3Narrow heat zone2,910 nm is strongly absorbed by water → a narrower band of heat damage than CO2 lasers
4. 4Filled in againhealing starts from the skin left between, and collagen and elastic fibers re-form

What it is cleared for, and a common misunderstanding about "lifting"

The U.S. FDA (Food and Drug Administration) has cleared UltraClear for skin resurfacing, among other uses. These include treating wrinkles and fine lines, uneven texture, scars including acne scars, and benign pigmented lesions.⁶ A clearance defines what a device may be used for; it does not tell you how large a result will be.

UltraClear is closer to a skin-renewal laser that changes surface quality than to a lifting device that raises sagging tissue. One study did score skin laxity, but laxity improved less than wrinkles, pigment and texture.¹

How do light polishing and deep channels differ?

The settings published in studies fall into a few depth ranges:²

• Shallow mode: removes 10-30 µm of the outermost layer, a gentle peel aimed at rough texture and dullness.
• Middle setting: removes 40-70 µm of the epidermis (the outer skin layer) to reach fine lines and shallow scars.
• Deep mode: makes thin channels 100-1,500 µm into the dermis (the main body of the skin under the epidermis), where collagen in deeper lines and scars is remodeled.²

Doctors often combine the two in one session. They may polish the whole face lightly while going deeper only where damage is greatest, such as around the mouth or on the cheeks.¹²

Modes that differ by depth

Replay

1. 1Shallow modeskims the stratum corneum to 10–30 µm — texture and dullness
2. 2Middle settingthe epidermis to 40–70 µm — fine lines and shallow scars
3. 3Deep modefine channels 100–1,500 µm into the dermis — deep wrinkles and scars
4. 4The deeper, the moremore change is expected, along with more redness, swelling, pinpoint bleeding and recovery time

Going deeper can bring more change, but redness, swelling, pinpoint bleeding and recovery time grow with it. Even on the same device, the choice of mode, density and number of sessions effectively makes it a different treatment.

What changes with the mode

Approach	Depth	Typical concern	Recovery in studies	Recovery burden (relative)
Shallow mode	about 10-30 µm	Texture, dullness	Redness 1-2 days
Deep mode	about 100-1,500 µm	Lines, acne scars	Redness 3-5 days
Both combined	Epidermis and dermis	Advanced sun damage	5-7 days incl. crusting

Which concerns may it suit?

How well this laser fits, and what to check first, depends on the concern. The cards below group what the studies and our treatment information say by concern.

What is checked first, by concern

• 1If it is fine lines, rough texture or dullness

  The shallow mode is considered first; studies reported improvement after just two sessions

  Shallow mode

• 2If you have depressed acne scars

  The deep mode reaches the dermis; red scars may get a vascular laser first

  Deep mode

• 3If melasma is suspected

  It can darken after fractional laser, so melasma is diagnosed first

  Diagnosis first

• 4If sagging is the main concern

  Laxity scored lowest with this laser, so a firming device is planned separately

  Combine with lifting

"Blinded photo review" in the table means the reviewers did not know which photo was taken before and which after treatment. This keeps their expectations from affecting the scores.

Some researchers describe treating redness in acne scars with a vascular laser first and then following with this laser.⁴ Scar shape and depth often call for other treatments first. If acne scars are your main concern, our guide to acne scars that have not improved with laser is worth reading as well.

How strong is the evidence?

UltraClear is one of the devices that has been studied by name in peer-reviewed journals (journals in which other experts check a study before it is published). The results need to be read together with how the studies were designed.

"Skin type" in the table groups skin by how easily it burns or tans in the sun. The higher the number, the darker the skin and the more easily it tends to form pigment.

All four studies compared before-and-after photos without a control group (people who had no treatment or a different one), and none had more than a few dozen participants. In three of them, the manufacturer funded the work or lent the device, or one of the authors advised or worked for the company.¹²³

Most participants had skin types I-III, and only a handful had type IV. Data for the skin types most common in East Asia are still limited. So these figures show what the device can do in study conditions; they are not a forecast for any one person.

What should you watch for if your skin darkens easily?

A review of fractional laser treatment in Asian patients names two main problems. One is post-inflammatory hyperpigmentation (brown darkening where inflammation has been). The other is rebound worsening of melasma (melasma becoming darker after treatment). The review concludes that more sessions at lower density, spaced further apart, lower that risk without giving up much of the benefit.⁵

Lower density, more sessions

Replay

1. 1Dense, all at oncecommon problems in Asian skin: post-inflammatory darkening · melasma rebound
2. 2Lower density, more sessionsfewer channels per session, more sessions, wider intervals
3. 3Added upsummarized as lowering the risk of darkening without greatly reducing the effect

In the UltraClear studies, two people developed temporary darkening. One was after sun exposure and an allergic reaction to an ointment; the other was melasma, not recognized before treatment, that flared in type IV skin. Both settled with time.¹ This is why melasma is looked for before treatment, and why strict sun protection matters afterwards.

If you get cold sores, say so in advance. Resurfacing can trigger an outbreak, and preventive antiviral medicine was given in the study as well.¹

What are the treatment day and recovery like?

At Bonita Clinic, we perform UltraClear as a non-surgical procedure with numbing cream; you go home the same day and there are no stitches. Recovery time and follow-up visits vary with the extent of treatment and your individual condition.

Discomfort depends on intensity. With the shallow mode and no numbing, the average pain score was 1.9 out of 10;³ when deep mode was included, scores were around 4 to 5.²¹

Recovery after treatment

1. Treatment dayRedness and heat; pinpoint bleeding with deep mode
2. Days 1-2Redness from shallow mode usually settles
3. Days 3-7Redness, swelling and light crusts from deep mode clear
4. Around week 2Inflammation inside the skin settles
5. Month 3When studies assessed results

Our aftercare advice:

• Apply sunscreen thoroughly whenever you go outside.
• Avoid harsh cosmetics and scrubs for one week.
• Use plenty of moisturizer to keep the skin hydrated.
• Skip hot baths and saunas, and wash with lukewarm water.

Contact us promptly if redness gets worse instead of fading, if the skin oozes or forms pus, or if blisters appear around the lips.

How we approach it at Bonita Clinic

Treatment options you can discuss in Seoul

Bonita Clinic has been at the same address since 1995, and Dr. Kwang-Seop Chung, a plastic surgeon board-certified in Brazil, sees patients himself. For skin texture, fine lines, pigment and scarring, the devices described on our pages include:

• UltraClear (2,910 nm fractional laser) in shallow, deep or combined modes
• Sculpio, a dual-wavelength picosecond laser
• Mediostar, which we use for firmness and contour
• Ulthera (HIFU) for the deeper SMAS layer, Eravity (a 1064 nm Nd:YAG laser) and 10THERMA (radiofrequency)

Device descriptions reflect general use; which of them you need, and in what order, is decided after your skin is examined.

Why does the plan and cost differ from person to person?

Two people asking for "UltraClear" can need very different treatments. The cost follows the plan, and the plan follows your skin.

• Main concern: texture, lines, pigment or acne scars
• Area: face only, or face and neck
• Shallow mode, deep mode, or both
• Number of sessions and spacing
• Skin type and risk of pigmentation
• Combination with other devices

Final plan and quote after an in-person skin exam

A final quote is given after the in-person exam, once the mode, area and number of sessions are clear. Photos can point in a direction but cannot fix the plan.

What can photos show, and what needs an in-person exam?

Photos are a useful first step for understanding your concern. They cannot show everything a laser plan depends on.

Photos can show

• Overall texture and visible fine lines
• Where pigment and redness are spread
• The outline of acne scars in good light
• How your skin reacted to past lasers

Needs an in-person exam

• Whether the pigment includes melasma
• Scar depth and type under side lighting
• Skin thickness and sensitivity
• Active acne or inflammation
• How much is sagging rather than texture

Helpful photos are taken front-on and from both sides at 45 degrees, in daylight, without makeup. If you have had lasers before, photos from before and after those treatments show how your skin tends to react. You can send us a message with your photos and a short history of past treatments.

Planning your visit and recovery

What is confirmed in advance is limited to the treatment information above: a non-surgical procedure with numbing cream, going home the same day and no stitches. In the published studies, redness from the shallow mode lasted one to two days and deep treatment needed about three to seven days. Your own course depends on the settings chosen.²¹

Studies spaced repeat sessions four weeks to two months apart.²¹³ A plan that needs several sessions therefore means either returning to Seoul or choosing a gentler, single-session approach. How many visits make sense for you is decided together at consultation, based on your skin and schedule.

After you return home, keep up sun protection and gentle skin care, and avoid other lasers or peels on the treated area unless a doctor advises them. If redness, oozing or blisters develop, see a local doctor and keep dated photos; they help any doctor who sees you later, including at follow-up.

Frequently asked questions

Can I go back to work or wear makeup right away?

It depends on intensity. In studies, redness after the shallow mode lasted a day or two on average, and after the deep mode three to five days. After deep multi-pass treatment of the whole face, redness and light crusting lasted about five to seven days.²¹ If you have photos, a presentation or other important plans, tell us at consultation.

How many sessions will I need?

That depends on the goal and the intensity. Studies used two to four shallow sessions or one to three deep sessions, spaced four weeks to two months apart.²¹³ Treatment may be a single session or several, and we explain the recommended number and interval in advance.

Can I have it if I have melasma?

Having melasma does not rule out every treatment. But the review of Asian patients lists rebound melasma as a key complication of fractional lasers, and limits fractional treatment of melasma to selected cases with non-ablative devices used cautiously.⁵ We therefore check whether melasma is present first, and decide whether to use this laser, and how strongly, after the exam.

How is it different from a CO2 fractional laser?

Both are ablative fractional lasers; the difference is the wavelength and how far heat spreads. A CO2 laser spreads heat widely and leaves a thick coagulated rim (a thin layer "cooked" by heat). A 2,940 nm erbium laser is absorbed far more strongly by water and leaves little heat. UltraClear's 2,910 nm wavelength is also strongly absorbed by water, and the amount of coagulation can be adjusted.¹

Researchers reported less pain and downtime than with conventional fractional ablative lasers,¹ but we could not find a study comparing the two side by side in the same people. With any device, depth, density and spacing shape both recovery and the risk of pigmentation.⁵

Does it hurt a lot?

With the shallow mode and no numbing, the average was about 1.9 out of 10;³ when the deep mode was included, scores were around 4 to 5.¹² Bonita Clinic applies numbing cream before treatment.

What to prepare before your consultation

• What you most want to change (fine lines, texture, pigment, acne scars, sagging) and in what order
• Whether you have been diagnosed with melasma, or have darkened after a laser before
• Recent lasers, fillers or other treatments and their dates, and any retinoids you use (creams or oral isotretinoin)
• Whether you get cold sores, and whether your scars tend to thicken (keloids)
• How many days of redness you can accept, and any dates you need to avoid

Bonita Clinic is on the 3rd floor of 565 Gangnam-daero, Seocho-gu, Seoul, about 100 m on foot from Exit 8 of Nonhyeon Station (Line 7). More about the treatment is on our UltraClear page. If firmness and contour are your main concern, see the Mediostar page and the Mediostar guide. For a picosecond laser that works on both texture and pigment, see the Sculpio guide, and for a laser that heats deeper skin for firmness, see the Eravity guide.