How to Distinguish Between Melasma, Blemishes, and Freckles (Laser Toning, IPL, Pigment Laser)

Many people have looked in the mirror at dark spots on their face and wondered, "Is this melasma, freckles, or just a blemish?" To put it simply, these three differ in their depth and distribution, so even if they look like the same type of pigment, the treatment methods vary.

Accurately distinguishing between the three is the starting point of treatment. This is because the choice of equipment and the number of sessions change depending on whether the pigment remains in the epidermis or has descended to the dermis.

First, here's a quick overview of the key differences between the three:

Even if they look similar on the surface, the depth at which the pigment is located differs, so the response to the same light or laser will vary.

The most prominent characteristic of melasma is its symptoms. It appears symmetrically on both cheekbones and cheeks, broadly and hazily, like dissolved paint. Even if it's not clearly visible on both sides, it may be hidden deeper within the skin.

The main causes include skin aging, hormonal changes, genetic factors, and UV exposure. Therefore, applying sunscreen when going out becomes a basic part of management.

Melasma is tricky because it resides in the dermal layer. The dermis is a deeper layer than the epidermis, making it difficult to resolve with a single treatment. When undergoing laser toning multiple times, the color tends to fade gradually. It's good to know in advance that there can be individual differences in dermal pigment treatment.

In the clinic, we sometimes see patients who want strong treatments all at once to quickly eliminate melasma. However, this can actually stimulate the pigment and make it darker, so we proceed with divided intensities.

Here are some lifestyle habits that can help manage melasma:

• Apply sunscreen 30 minutes before going out and reapply every 2-3 hours.
• Use a hat or parasol to block direct sunlight further.
• Avoid rubbing or excessively stimulating massages on the skin.
• Maintain skin barrier by getting enough sleep and hydration.

Freckles refer to spots smaller than 3mm that appear on the face, scattered like sesame seeds. They mostly appear during childhood and are distributed on areas frequently exposed to sunlight, such as the nose, cheeks, back of the hands, and chest.

As they appear during childhood, there is a genetic influence, and UV exposure is cited as a cause. They may naturally lighten as one becomes an adult, but they can also remain. The biggest difference is that freckles occur in the epidermal layer, unlike melasma.

Since they often spread widely across the entire face, IPL treatment, which falls under Epidermal Pigment Removal for blemishes, age spots, and freckles, is primarily used. IPL uses various wavelengths of light to treat widely distributed pigment, and some scabs may form and fall off after the procedure.

If you are concerned about widespread pigment, you may want to inquire via chat consultation about pigment treatment to determine the appropriate approach for your condition.

Blemishes refer to pigment that appears after adulthood. They appear sporadically on the face in the form of small spots, and the cause is considered to be UV exposure. Their location is also in the epidermal layer, like freckles.

When located in the epidermal layer and the number of blemishes is small, relatively quick removal is possible by targeting only the blemish area, such as with Laser Lesion Removal. Conversely, if blemishes are widespread across the entire face, IPL treatment is performed.

However, since they appear after adulthood, it's not uncommon for melasma and blemishes to appear together. In such cases, it's important to note that using only IPL can make melasma darker. Therefore, when both melasma and blemishes are present, laser toning is combined.

Here are some items to check yourself before deciding on pigment treatment:

• Observe whether the pigment is widely spread symmetrically on both sides (possible melasma) or scattered as small spots (possible freckles, blemishes).
• Recall when it appeared: was it present since childhood, or did it develop after adulthood?
• Keep in mind that more than one type of pigment may be mixed.
• Get a diagnosis first rather than using strong over-the-counter products based on self-diagnosis.

It is more common to have a mix of melasma, freckles, and blemishes than to have only one type of pigment. When pigments are mixed, an approach that combines equipment tailored to the skin condition, such as a Customized Whitening Solution, may be necessary.

Even if they look like the same pigment, the choice of equipment varies depending on the depth, distribution, and other accompanying pigments. When you meet medical professionals with rich experience in pigment treatment, they can select the appropriate equipment for each of melasma, freckles, and blemishes.

Yonsei Star Dermatology Sinchon has dermatologists on staff and possesses clinical cases for pigment treatment. Since treatment effects and the number of sessions can vary individually, it is important to establish a plan tailored to your skin condition through consultation.

If you are curious which type of pigment your spots are closer to, you can feel free to ask even before a diagnosis.

Chief Director Lee Sang-joo (MD, PhD, Yonsei University College of Medicine and Graduate School, Completed Dermatology Residency at Severance Hospital, President of Korean Dermatological Association) Chief Director Lee Sang-joo's Profile First Published 2023-09-25 / Last Reviewed 2026-06-16

Since the type of pigment and treatment response can vary from person to person, please confirm the accurate diagnosis and treatment direction through consultation with medical professionals.