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I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne>

WELLS Dermatology CLINIC / WELLS美容皮膚科 · 웰스피부과 본원 블로그 · April 21, 2026

I attended an invited lecture in Shanghai on Clarity II. <Treatment of male-type melasma and acne> ​ ​ Hello. I am Choi Won-woo, a board-certified dermatologist with 23 years of ex...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: WELLS Dermatology CLINIC / WELLS美容皮膚科

Original post date: April 21, 2026

Translated at: April 25, 2026 at 4:46 AM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne> image 1

I attended an invited lecture in Shanghai on Clarity II. <Treatment of male-type melasma and acne>

Hello.

I am Choi Won-woo, a board-certified dermatologist with 23 years of experience.

Last week, I was invited to the APEC conference held at the Bellagio Hotel in Shanghai, and I returned after presenting my clinical treatment experience using Clarity II.

If you have ever considered treating melasma or acne, you may have heard of laser treatment at least once.

However, in clinical practice, I often hear patients say that even though they received treatment with the same device,

the level of satisfaction with the results felt different.

This is not so much due to a difference in the device’s performance itself,

but because the results change depending on how the energy is delivered and what criteria are used to design the treatment.

I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne> image 2

In this lecture, rather than simply introducing the device,

I shared a specific protocol for how I approach the following three conditions in actual practice:

Refractory melasma

Male-type melasma

Recurring acne

  1. Invited APEC Lecture on Clarity II

<Shanghai Bellagio Hotel>

This APEC conference was not simply a place to introduce a device,

but a setting where medical professionals from various countries gathered to share clinical experience and treatment standards.

I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne> image 3

In particular, because Clarity II is a device used in a wide range of areas such as

pigment disorders

redness

acne

the discussion focused not just on how to use it, but on how to “design” treatment according to the patient’s condition.

I also participated as a speaker,

and presented my approach to treating refractory melasma and acne based on data I have accumulated over time.​​

  1. Male-Type Melasma: Why Is It Difficult to Treat?

I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne> image 4

Treating melasma is not simply about lightening the color; it is a process of stabilizing the skin’s response itself.

In the case of male-type melasma in particular,

the skin is thicker

sebum production is higher

the response to irritation is stronger

so the effect is often limited with ordinary toning methods.

At this point, what matters is the “method of energy delivery.”

I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne> image 5 I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne> image 6

Clarity II toning uses short pulses such as 0.1 ms, 0.3 ms, and 0.5 ms in stages,

and is designed so that it does not strongly stimulate the entire skin but instead responds selectively to pigment.

In other words,

it is not a method of forceful removal,

but an approach that breaks it down in a divided and stable way.

Melasma is not a treatment that removes; it is a treatment that manages so it does not collapse.

This difference ultimately creates a major gap in the possibility of recurrence and in skin stability.

  1. Recurring Acne: Clarity Gold PTT Approach

The most difficult case in acne treatment is when inflammation keeps recurring and the skin becomes sensitive.

In such cases, it is often difficult to prevent recurrence with simple extraction or medication alone.

I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne> image 7

The Clarity Gold PTT introduced in this lecture

is a method that selectively delivers laser energy to specific areas to reduce the sebaceous glands and the inflammatory environment itself.

Simply put,

it is a treatment that concentrates heat only where it is needed, reduces irritation to the surrounding skin, and improves the underlying environment of inflammation.

So, not only current acne lesions,

but also recurring breakouts,

red marks,

overall skin condition

can be approached in a way that improves them together.

  1. In the End, It Is the “Design” That Creates the Result.

Even when the same device is used, the reason results differ is clear.

How the energy is set

In what order it is applied

How the patient’s skin condition is interpreted

All of these factors affect the treatment outcome.

One of the points I emphasized during the lecture was the stability and consistency of energy delivery.

I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne> image 8

Clarity II is designed so that the pulse shape itself is maintained more uniformly, allowing for more stable treatment results.

What creates the result is not the device, but how that device is used.

In closing,

I Attended an Invited Lecture in Shanghai on Clarity II. <Treatment of Male-Type Melasma and Acne> image 9

One thing I felt again while preparing for this APEC lecture was that

in skin treatment, maintaining stability is more important than changing things quickly.

This is especially true for conditions like melasma or acne, which are prone to recurrence.

Because the appropriate treatment direction can differ depending on the current skin condition,

I recommend checking the treatment design that suits you first, rather than focusing only on the name of the procedure.

Thank you for reading this long post.

This has been Choi Won-woo, CEO of Well’s Dermatology Clinic.

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