Deep vs Shallow Acne Scars — How to Tell, and What Treats Each
How to judge acne scar depth — how to treat shallow scars, which techniques for deep scars, and the different timelines and session counts. Advice from Dr. Big.
Acne scars aren’t just “deep” or “shallow” — but depth tells you a lot about which technique to use, how much improvement to expect, and how many sessions you’ll need.
Dr. Big explains how to judge your own scar depth, the right technique per level, and why shallow scars aren’t always “easy.”
How deep are acne scars?
Three levels:
- Mild (<0.5 mm): visible only in angled light · smooth to the touch · reaches the lower epidermis
- Moderate (0.5–1 mm): visible in normal light · feels like a dip · reaches the shallow dermis
- Severe (>1 mm): visible in all light · feels like a hole · reaches the lower dermis or subdermal
How to judge your own depth
Test 1: 3-direction light — front light (shallow disappears) · 45° (shallow appears) · side light (all levels show). Visible only in side light = shallow · in angled + side = moderate · even in front light = deep. Test 2: finger touch — smooth = shallow · wavy = moderate · a hole = deep. Test 3: foundation — disappears = shallow · still visible = moderate+ · foundation sinks in = deep. Test 4: send a photo — best: send via Clarity LINE for a free assessment.
Shallow scars — how to treat
Techniques: Picolaser · gentle MNRF · in-clinic AHA peel · consistent skincare (retinol, vitamin C help reasonably). Sessions: 3–4, 6–8 weeks apart. Expected: 70–85% in 4–6 months. Downtime: 0–2 days.
At Clarity, shallow scars use the same 5,000 baht/session program, weighted toward Pico + MNRF.
Moderate scars — how to treat
Techniques: Subcision (if bands) · MNRF · Ablative Fractional Laser · Picolaser — all 4 in one session. Sessions: 4–6, 6–8 weeks apart. Expected: 60–80% in 6–8 months. Downtime: 3–5 days.
Deep scars — how to treat
Techniques: intensive Subcision · MNRF deep mode · TCA CROSS (deep ice pick) · Ablative Fractional CO₂ · punch excision (wide deep ice pick). Sessions: 6–10, 6–8 weeks apart · some need 1–2 years of maintenance. Expected: 50–70% in 8–12 months — shallower, not fully gone. Downtime: 5–7 days.
Why shallow scars are sometimes harder than deep ones
It sounds odd, but: shallow scars spread over a wide area are harder to cover (longer per session) · shallow scars mixed with dark marks need separating “scar” from “mark” · shallow scars in thin skin (40+) stand out more and treat less effectively than deep scars in young skin.
Factors beyond depth
Age: 20–35 best · 35–50 moderate · 50+ improves but slower. Skin type: oily — good collagen response · dry — needs extra nourishment · sensitive — avoid ablative, choose MNRF + Pico. Habits: good sleep, hydration, no smoking, strict aftercare = better results. Genetics: some have a better collagen response.
Timeline by depth
| Depth | Result starts at session | Full result after |
|---|---|---|
| Shallow | 1 | 4 months |
| Moderate | 2 | 6–8 months |
| Deep | 3 | 8–12 months |
Frequently asked questions
Q: Can scars deepen with age? A: Yes — the fat layer thins, skin thins, scars stand out more.
Q: How do shallow scars differ from dark marks? A: A scar = a depressed structure · a dark mark = pigment in smooth skin — Pico helps marks, not scars.
Q: Can treatment make them deeper? A: No, with correct technique — but self-applying concentrated acids can create new scars.
Q: Is one laser enough for deep scars? A: No — several techniques are needed.
Q: Do prices differ by depth? A: At Clarity, one price, 5,000 baht, covers every depth.
Summary
Depth determines the technique, sessions, timeline, and expected result. Whether shallow or deep, at Clarity we tailor the program to your case at 5,000 baht/session.
Contact:
- LINE: @clarityclinic — send a photo of your acne scars for Dr. Big to review
- Location: Spring Tower, B Floor · Ratchathewi, near BTS (Siam, Phaya Thai, all Bangkok)
- Free 30-minute consult with Dr. Big in person
- Price 5,000 baht/session including all main procedures + aftercare cream · pay per session, no course packages
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