Post-acne marks are flat brown (PIH) or red/purple (PIE) spots left after breakouts heal. At Doje Clinic, common treatment options include Vbeam, Pico Toning, Laser Toning, chosen after a dermatologist's assessment.
Medically reviewed by [DOCTOR NAME], board-certified dermatologist · Doje Clinic, Apgujeong, Seoul · Last reviewed November 2026
What is post-acne marks (pih & pie)?
Post-acne marks are flat brown (PIH) or red/purple (PIE) spots left after breakouts heal.
What causes it?
- inflammation from acne
- picking or squeezing
- sun exposure
How we treat post-acne marks (pih & pie)
Brown marks respond to pigment lasers and toning; red marks respond better to vascular lasers. Controlling active acne first prevents new marks.
Treatment options compared
| Treatment | Downtime | Sessions |
|---|---|---|
| Vbeam (Pulsed Dye Laser) | Mild redness and swelling; bruising only at high settings | Series of 3–5 |
| Pico Toning (Picosecond Laser) | Mild redness for a few hours | Series of 5–10, every 1–4 weeks |
| Laser Toning (Q-switched Nd:YAG) | None to minimal | Series of 5–10, weekly to biweekly |
| Medical Chemical Peel | None to several days of peeling depending on depth | Series of 3–6, every 2–4 weeks |
At-home care
- sunscreen
- avoid picking
- niacinamide or azelaic acid if advised
When to see a dermatologist
If marks are depressed rather than flat, they may be scars and need a different plan.
Key facts
| Concern group | Pigmentation |
|---|---|
| Main causes | inflammation from acne, picking or squeezing, sun exposure |
| First-line options | Vbeam, Pico Toning, Laser Toning |
| Consultation | Required to confirm diagnosis and plan |
Patient questions
Frequently asked questions
What is the best treatment for post-acne marks (pih & pie)?
It depends on the cause and your skin. Options often include Vbeam, Pico Toning, Laser Toning. Brown marks respond to pigment lasers and toning; red marks respond better to vascular lasers.
What causes post-acne marks (pih & pie)?
Common causes include inflammation from acne, picking or squeezing, sun exposure.
Can post-acne marks (pih & pie) come back after treatment?
Some concerns are controlled rather than cured. Sun protection, skincare and maintenance help results last.
When should I see a doctor about post-acne marks (pih & pie)?
If marks are depressed rather than flat, they may be scars and need a different plan.
Your skin plan, designed in Apgujeong
English-speaking consultations · Written quotes · Aftercare you can take home
Medical information on this page is general and educational. Results, downtime and suitability vary by individual. A consultation with a Doje Clinic physician is required before any treatment.