Pico Laser in Gangnam for Bumps, Pores and Texture

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A picosecond laser delivers its energy in trillionths of a second. At 532 or 755 nm much of that energy is taken up by melanin, which is why those settings are tied to freckles and sun spots. At 1064 nm far less is absorbed by surface pigment, so more light reaches the dermis, where it can set off a mild repair response in collagen and in the oil glands.

That difference is the reason a Gangnam clinic may suggest a pico session to someone with no brown marks at all. The aim shifts from breaking up pigment to smoothing how light falls on the skin. Some devices add a lens array, such as the FOCUS lens on the 755 nm PicoSure by Cynosure, which splits the beam into tiny points.

Sebaceous gland hyperplasia means an oil gland that has grown larger than usual. It shows up as a soft, skin-colored or yellowish bump, often with a tiny dip in the middle, most often on the forehead, nose and cheeks of adults. They are harmless but hard to hide under makeup.

In a 2026 case report in JAAD Case Reports, Wichyanrat described using a 1064 nm picosecond laser to treat this kind of bump in a patient with Asian skin, an area where darkening after heat-based methods is a common worry. A case report follows one person, so it shows the approach was tried, not how often it works.

Ablative options that remove the top of each bump also exist and usually leave small crusts for several days. A picosecond pass is gentler on the surface, which is part of the appeal on a short trip, but the gland itself stays in the skin and may slowly enlarge again.

Many visitors arrive with mixed concerns, and the first consultation sorts them before a setting is chosen.

The visit begins with cleansing and photos under the same light, which makes later comparison honest. Numbing cream is applied when the setting calls for it. The whole appointment, numbing and soothing included, commonly fits in about an hour.

Plan the texture course around repeat visits. Spacing of several weeks between sessions is common, because collagen remodeling is slow and each session builds on the last. Mention any retinoid or exfoliating acid you use, and arrive without a fresh tan.

Pinkness and a warm feeling are the usual reaction and tend to settle within hours to a few days. Lens-array passes can leave tiny pinpoint marks or fine crusts that shed within about a week. Darkening after inflammation is possible, especially in medium and deeper skin tones, which is one reason doctors often start at lower energy.

Texture change is gradual and modest. Results vary from person to person, and bumps from enlarged glands can return because the gland is still there. An open wound or a recent tan on the area usually means waiting.