To treat post-inflammatory hyperpigmentation (PIH) — those dark spots that linger after acne, bug bites, or inflammation — the goal is to brighten skin, even tone, and prevent further discoloration. Here's what works best:
🎯 Best Ingredients for PIH
| Ingredient | What It Does |
|---|---|
| Vitamin C | Brightens skin and inhibits melanin |
| Niacinamide | Evens tone, reduces melanin transfer |
| Azelaic Acid | Brightens and fights both acne and pigment |
| Tranexamic Acid | Blocks melanin formation (especially great for melasma and PIH) |
| Alpha Arbutin | Gentle but effective brightener |
| Retinoids (retinol, tretinoin, adapalene) | Speeds up cell turnover to fade dark spots |
| Licorice Root Extract | Natural brightener, anti-inflammatory |
| Kojic Acid | Inhibits melanin production (can be irritating for some) |
🌞 Sunscreen Is a MUST
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Use SPF 30 or higher daily — no exceptions.
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UV exposure darkens PIH and slows healing.
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Look for tinted sunscreen for extra protection from visible light (especially helpful for deeper skin tones).
🧴 Routine Basics
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Gentle cleanser (no stripping)
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Targeted serum with 1–2 brighteners (like niacinamide + alpha arbutin)
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Moisturizer to support the barrier
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Daily SPF
⏱️ How Long Does It Take?
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4–12 weeks for noticeable fading (longer for deeper skin tones or older spots)
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Be consistent and gentle — over-exfoliating can make it worse