Acne PIH in Toronto & Markham: Treating Post-Inflammatory Hyperpigmentation

The majority of cases can achieve significant lightening, but results require time and a structured protocol.。PIH on Asian skin can take 6–24 months to fade on its own. With a structured treatment protocol, that timeline can be shortened to 3–6 months with meaningful lightening. However, if the underlying acne or inflammation is not controlled, PIH will keep recurring — which is why treating the marks and managing the acne must go hand in hand.

PIH is Brown or grey-brown pigmentationcondition, requiring brightening + barrier repair + low-fluence laser treatment; PIE isPink or dark-red vascular changesconcerns that require a vascular laser such as Vbeam®. The two conditions frequently coexist, yet their treatment logic is entirely different — Wood's lamp skin typing must be performed first to determine which to address first.

Self-applying high-concentration acid peels is strongly discouraged。Clinically, approximately 60% of PIH patients present with a compromised skin barrier and worsened diffuse pigmentation caused by self-administered use of high-concentration AHAs (30%+), high-strength retinol, or high-dose vitamin C. If home skincare is necessary, opt forLow-concentration lactic acid / mandelic acid / niacinamide,A physician assessment is recommended first.

Three most common reasons treatments fail: (1) Delivering energy-based treatment without assessing barrier status —— any irritation applied to a compromised barrier will trigger a new cycle of PIH; (2) Applying energy parameters designed for Caucasian skin without adjustment —— Asian skin contains 5–10 times more epidermal melanin — the same energy settings used on lighter skin types can cause thermal injury; (3) Treating PIH as melasma or general pigmentation —— The treatment approach is entirely different.

Depends on the PIH type:Superficial post-acne PIH: 4–6 sessions(once every 3–4 weeks),Chemical exfoliation / barrier repair: 6–8 sessions、IPL Post-mistreatment cases: 8–12 sessions、Stubborn deep PIH: 10–15 sessions。All types are advised to transition to aMaintenance phase: once every 8–12 weeks,while managing the underlying causes of acne on a long-term basis.

Not recommended.Active acne means the skin is in an ongoing inflammatory state. Performing laser or resurfacing treatments at this stage can cause pigmentation to worsen with every session. The correct sequence is:Control active acne first → achieve stability for at least 3 months → then address pigmentation。Dr. Xu will concurrently assess whether a comprehensive acne management program should be initiated first.

All three have distinct mechanisms and can be used in combination.Cyspera(cystine precursor)Tyrosinase inhibitor — the leading Health Canada–licensed, non-hydroquinone topical option in North America;Niacinamide (Vitamin B3)Inhibits melanosome transfer and repairs the skin barrier — suitable for long-term use;Tranexamic acidTopical or oral (by physician prescription) fibrinolysis inhibitors — suitable for stubborn PIH. Dr. Xu tailors the combination based on each patient's barrier status and pigmentation depth.

Yes, butNot the first-line option — and must be performed at low fluence。For Asian PIH, the clinical first choice is a low-stimulation, multi-mechanism device such as Fotona ClearGlow. PicoSure Pro is used as an adjunct — at ultra-low energy settings — only when the skin barrier is stable and pigmentation remains stubborn. Applying high-energy laser directly to active PIH carries a high risk of rebound hyperpigmentation.

Fotona ClearGlow / low-irritation treatments such as mesotherapy,You can go about your day immediately after treatment,24 hours after treatment. However, we recommend: (1) Use only barrier-repair skincare for 7 days post-treatment — discontinue all active ingredients (vitamin C, acids, and retinol); (2) Apply a mineral SPF 50+ sunscreen containing iron oxide strictly for 4 weeks; (3) On the day of treatment, use a mineral sunscreen only — avoid chemical sunscreen to minimize irritation.

ID Cosmetic Clinic Located at 30 Gibson Dr., Markham — approximately 30–40 minutes by car from downtown Toronto, 20–25 minutes from North York, 15–20 minutes from Richmond Hill / Vaughan, and 20–30 minutes from Scarborough. Situated at the intersection of Highway 7 and Highways 404 / 407. PIH treatment programs typically span 6–12 months,The cost of choosing the wrong provider — and risking darkened PIH — far outweighs the effort of making the trip to see us。For pigmentation management in Asian skin, we recommend entrusting your care to a physician with genuine, in-depth expertise in Asian skin types.