Post Inflammatory Hyperpigmentation: What It Is and How to Fade It
By Arron Pinder ·
Post inflammatory hyperpigmentation, PIH, is the flat dark mark left behind after a breakout heals. It is not a scar. A scar changes the texture of skin; PIH only changes the color, which is why it responds to the right routine instead of needing a procedure. The mark typically outlasts the breakout that caused it by months, which is what makes PIH feel harder to treat than the acne itself.
Key takeaways
- PIH is extra pigment your skin made while healing a breakout. It is not scar tissue, and it fades.
- Picking, popping or over-treating an active breakout makes the mark it leaves darker and slower to fade.
- The night routine that treats it: Exfoliating Cleanser, Clarifying Gel for the breakouts, then Resurfacing Crème for the marks.
- Visible fading starts by day 3. Most of the change lands by day 14. By day 30, 94% of clients who complete the full protocol as directed reach their goal.
Why does PIH happen at all?
When skin is inflamed, from a breakout, a cut, a bite or picking, the pigment cells in that spot overproduce melanin as part of the healing response. That pigment stays after the inflammation is gone, which is why the mark outlasts the breakout. It is your skin healing too hard in one place, not damage.
Why does it take longer to fade than the breakout took to heal?
A breakout can heal in a week. The pigment it leaves sits deeper and clears on its own timeline, typically 6 to 12 months untreated. That gap between "the pimple is gone" and "the mark is gone" is the most common reason people think a product stopped working when it was just early.
The nighttime routine that treats PIH
- Exfoliating Cleanser. Pea-sized amount, 30 to 60 seconds over face and neck with lukewarm water, avoiding the eye area. Rinse and pat dry.
- Clarifying Gel. 2 pumps over the whole face, avoiding the eye area. Let it dry 1 to 2 minutes. This treats the active breakouts so they stop making new marks.
- Resurfacing Crème. 5 pumps as a thin, even layer over clean, dry skin, avoiding eyes and lips. 14 nights on, 3 nights off, repeat. First time: patch test on your arm, then every other night for the first week before the full cycle.
In the morning, Exfoliating Cleanser, Clarifying Gel, then Refining Crème (4 pumps, face and neck) for SPF. Refining Crème in the morning and Resurfacing Crème at night are meant to be used together.
If you have five or fewer distinct marks, Spot Treatment (2 to 3 pumps directly on the marks) can replace Resurfacing Crème. Never use those two on the same day. For everyday support on top of either, Spot Eraser (1 to 2 pumps dabbed on the marks, morning and night) is the gentle non-retinoid option and conflicts with nothing.
What makes PIH worse
- Picking or popping. The single biggest driver of darker, slower-fading marks. It adds trauma on top of the inflammation that was already there.
- Skipping SPF. UV stimulates more pigment in already-affected skin. Unprotected marks take noticeably longer.
- Adding products from outside the routine. Prescription tretinoin, extra acids or another brand's retinoid on top of this routine causes irritation, and new irritation makes new pigment on top of the mark you are treating.
What to expect, and when
By day 3 you can see it: breakouts subsiding, marks beginning to fade. Between day 4 and day 14 most of the visible change happens, and that is also when peeling is common, usually 4 to 7 days, heaviest around the nose, chin and mouth. By day 30 the new surface has settled and 94% of clients who complete the full protocol as directed reach their goal. Fuller fading of older, deeper marks can take 8 to 12 weeks. See the full breakdown of what's normal and what's not. Not sure where to start? Read what your first 30 days look like.
Frequently asked questions
Is PIH the same as a scar?
No. A scar changes the texture of skin. PIH only changes the color, which is why it fades with the right routine instead of needing a procedure.
Does PIH look different on deeper skin tones?
Deeper tones can show PIH with more contrast, but the mechanism and the routine are identical. This routine was developed on the full range of skin tones, including the deeper tones where marks sit longest.
Which products can be used on the same day?
Clarifying Gel and Resurfacing Crème on the same night, yes. Refining Crème in the morning with Resurfacing Crème at night, yes. Refining Crème with Spot Treatment, yes. Spot Eraser with anything, yes. The one pairing to avoid is Resurfacing Crème and Spot Treatment on the same day, and never combine Resurfacing Crème with prescription tretinoin. Read the full retinol rules.
How do I stop new marks forming while old ones fade?
Treat active breakouts early with Clarifying Gel, do not pick, and wear SPF every morning. Preventing new marks matters as much as fading old ones, because every new mark resets the clock.
