When you see small, scattered brown pigmentation on the face, it may all seem like the same kind of dark spot.

In reality, though, freckles, solar lentigines, post-inflammatory hyperpigmentation, and faint melasma are often mixed together.

This is also why we do not rely only on a visual exam,and why we often use a skin analysis device such as Mark-Vu.

 

So freckle treatment is not simply about removing pigment aggressively.

It is also about assessing how deep the pigment sits, how sensitive the skin is, and whether the skin is frequently exposed to ultraviolet light.

CASE: Before treatment → About 19 weeks later / 2023-12-22 → 2024-05-02

 

 

Looking at the attached before-and-after photos, before treatment there were many small, brown, spot-like pigmented lesions distributed widely across both cheeks and around the nose.

 

Although this case was treated as freckles,other types of lesions were also partially mixed in.

 

In actual practice, we evaluate whether freckles and sun-related pigmented spots are present together, whether there is more broadly distributed pigmentation over the cheekbone area, and whether the skin tends to react sensitively to laser treatment.

 

In the photo taken about 19 weeks later, you can see that the overall pigment density has lightened and the skin tone appears more even.

 

This does not mean everything was completely removed in one session.

Rather, it is better understood as a gradual improvement achieved by adjusting the interval and treatment intensity based on the skin’s response.

 

There is also a paper worth referring to in relation to freckle treatment.

 

In a 2024 study, Huang Y et al. treated 12 patients with freckles using a 730-nm Ti picosecond laser and evaluated the results 8 weeks after a single treatment session.

 

In that paper, the average clearance rate was reported as 74.46%, and the average GAIS score, which reflects overall cosmetic improvement, was above 4.

 

Post-treatment erythema and swelling were relatively short-lived, and post-inflammatory hyperpigmentation and hypopigmentation were each reported in one patient, with no scarring reported.

Clinical Before-and-After Findings with a 730-nm Picosecond Laser

 

In Figure 1 of the paper, small brown freckles are widely distributed over both cheeks before treatment, and at 8 weeks after treatment, the overall pigment density and intensity are clearly reduced.

 

Similar to the photos from my own case, you can see that the overall pigment burden and tone across the face were improved in a stable way.

 

Freckles often have a predominantly epidermal pigment component, which is one reason they may respond relatively quickly.

Histologic Changes After 730-nm Picosecond Laser Irradiation

 

Figure 2 of the paper shows the histologic findings after irradiation with the 730-nm picosecond laser.

 

In real treatment as well, it is important not to simply increase the energy as much as possible, but to adjust the wavelength, intensity, and interval according to pigment depth and skin response.

 

Freckle treatment usually involves both an approach to improve the overall facial tone and an approach to manage the darker, spot-like pigment that remains.

 

If fine pigment is spread across the entire face while darker focal spots are mixed in, it is often more stable to adjust treatment step by step while observing the skin’s response, rather than trying to remove all pigmentation aggressively from the beginning.

 

Especially when the skin is sensitive or when there is also suspicion of a melasma tendency, strong spot treatment may actually prolong temporary post-inflammatory pigmentation, which is why diagnosis comes first.

Post-treatment care does not need to be long or complicated, but the basics do matter.

 

For about 1 to 2 weeks after treatment, it is better to pause irritating exfoliating products such as scrubs, peeling pads, high-concentration AHA/BHA, and retinol.

 

Instead, consistent moisturization and sun protection are important.

Freckles and sun-related pigmentation are sensitive to ultraviolet light, so if there is significant sun exposure even after treatment, the pigmentation may darken again or new pigment may appear.

 

If scabbing or flaking develops, it is also important not to pick at it.

In the end, the key thing to look for in freckle treatment before-and-after results is not “how many spots disappeared at once,” but how stably the overall pigment density and skin tone have improved.

 

Even when lesions look like the same kind of freckles, the treatment plan can vary depending on pigment depth, skin sensitivity, sun exposure habits, and what other types of pigmentation are mixed in.

 

That is why, with freckle treatment, it is often more realistic to adjust the intensity and interval after diagnosis while monitoring the course, rather than thinking in terms of a fixed number of sessions.

 

This article is intended to provide general cosmetic and dermatologic information.

Treatment methods and outcomes may vary depending on individual skin condition, the type of pigmentation, pigment depth, and degree of sun exposure.

 

Reference Paper
Huang Y, Liu X, Zhang M, Lin T. Successful Treatment of Freckles Using a 730-nm Picosecond Laser: A Prospective Study. Clinical, Cosmetic and Investigational Dermatology. 2024;17:3027-3032.