Bumpy skin: raised areas and sunken areas have different causes
Hello, this is Yonsei Bombit Dermatology.
"My skin texture is so uneven that makeup doesn’t go on well."
"I don’t have flaking, but my skin doesn’t feel smooth."
Many people come to the clinic with concerns like these.
However, when we actually examine the skin, bumps that simply seem like a problem of being “rough”
can be divided into raised types and depressed types, and the causes are different, so treatment also has to be approached very differently.
Today, Yonsei Bombit Dermatology will explain bumpy skin in two categories and tell you what treatment is needed for each type.

Bumpy skin: raised areas and sunken areas have different causes
1️⃣ Raised bumps — what causes them?
When the skin surface becomes bumpy and makeup clumps or lifts, the following skin conditions or states may be the cause.
✔ Flat warts – thin, flat-topped bumps caused by a viral infection
✔ Sebaceous hyperplasia – gland-like lumps that often appear in the center of the face
✔ Comedonal acne – closed comedones that feel like tiny bumps
✔ Closed comedones – not very visible on the surface, but feel like small lumps when touched
These protruding bumps are mostly structures formed on the stratum corneum or at the openings of pores, so they are difficult to resolve with skincare or laser treatment alone.
✔ Treatment methods
• Resurfacing with a CO2 laser – effective for flat warts and sebaceous hyperplasia
• Professional extraction – to clear closed comedones and tiny acne bumps
• Anti-inflammatory laser or acne medication may be used if needed
📍 For raised bumps, removal comes first, and after removal, treatment moves on to improving skin texture.
2️⃣ Sunken bumps — why does the skin look indented?
Bumps that make the skin look broadly depressed or pores look deeper are often caused by structural collapse around the hair follicles or a decrease in collagen.
✔ Pitted scars – small, deep indentations left after acne
✔ Enlarged pores – pores that have widened due to reduced elasticity
✔ Reduced skin elasticity – enlarged pores and texture damage along with fine unevenness
For this type, it is not simply about closing pores; treatment to remodel the skin’s internal structure is needed.
✔ Treatment methods
• Secret RF – micro-needle radiofrequency for lifting and regenerating the dermis
• 3Deep FSR – fractional radiofrequency to gently improve deeper texture irregularities
• Pico MLA – improves texture while smoothing the skin surface evenly
• Rejuran, Juvelook – enhances regenerative capacity within the skin and helps restore elasticity
📍 Sunken bumps are resolved by restoring the skin’s internal structure, and the key is to combine various devices and injection treatments according to the skin condition.
3️⃣ Is my skin raised, or is it sunken?
Bumpy skin is often a mix of raised and sunken types.
Therefore, a professional skin diagnosis is essential before treatment.
✔ Bumps that feel like uneven protrusions → CO2 laser / extraction first
✔ Skin that looks generally spread out and lacks texture definition → regeneration and elasticity-focused treatment
📍 At Yonsei Bombit Dermatology, a dermatologist diagnoses the skin to accurately distinguish the cause of the bumps and designs a personalized treatment plan.
✨ In closing
Bumps may look similar on the surface, but in reality they require completely different mechanisms and treatments.
Raised bumps should be removed, and sunken areas should be filled.
Yonsei Bombit Dermatology analyzes the shape, depth, and cause of bumps from multiple angles and helps restore smooth, healthy skin texture through a variety of devices and injection treatments, including CO2 laser, RF fractional treatments, Rejuran/Juvelook.
📍 Yonsei Bombit Dermatology
📞 02-837-8275
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