How to Fade Acne Marks: Red Marks vs. Brown Marks

Photo by engin akyurt · Unsplash

When I worked at a Korean beauty shop, I often met customers who were more stressed about the mark a pimple left behind than about the pimple itself. Two questions came up a lot: “The breakout healed, so why is this red (or brown) spot still here months later?” and “Has this turned into a permanent scar?”

I’ll start with the reassuring part: flat marks that are just discoloration often fade over time. There’s one distinction you really need to make first, though. A mark that’s only a color change and a scar that’s sunken or raised are completely different problems, and they need different approaches. In this post I’ll go through why acne marks happen, how to fade acne marks depending on the type, how to tell red marks from brown marks, and what actually makes them stick around longer. I’ll keep it grounded in evidence throughout.

This post is general skincare information. True scars (sunken or raised), pigmentation that won’t fade, and acne that keeps getting worse are hard to fix with home care alone. In those cases, it’s worth seeing a dermatologist rather than relying on home care alone. And as I’ll keep repeating below: squeezing or repeatedly touching breakouts raises your risk of marks and scars, so please leave them alone.

The whole process at a glance: (1) Tell marks from scars → (2) Figure out if it’s a red or brown mark → (3) Daily sun protection → (4) Ingredients by type → (5) Order and timeline → (6) Don’t squeeze

1. Marks and Scars Are Not the Same Thing — Get This Right First

This is the first thing to sort out. The names sound similar, but they’re completely different problems.

Marks: The skin’s surface is smooth, and only the color is left behind. They look red or brown. They can fade gradually over time, and skincare may help support that process.
Scars: The texture or structure of the skin itself has changed. The classic forms are sunken (pitted) or raised, and structural changes like these are hard to fully reverse with regular skincare. Depending on the type and depth of the scar, a dermatologist may suggest treatments like microneedling or lasers.

Dermatologist Gabriella Sebestyen explains in her article on post-acne marks that acne marks are flat areas of discoloration left after a lesion heals, and that they aren’t the same as true scars — marks mainly affect skin color, while scars involve a change in texture. So when you check in the mirror or run your fingers over the spot: smooth but a different color means a mark, and bumpy or uneven means a scar. This post mainly focuses on marks, where the skin texture is unchanged and only the color remains.

2. Red Marks vs. Brown Marks — A Simple Way to Tell

Marks that are just discoloration fall into two main types, and the care for each is a little different.

Red marks (PIE): Look pink or red because of lingering inflammation and vascular changes after acne heals.
Brown marks (PIH): Look brown or gray because too much melanin was produced. They’re more common in medium to deep skin tones and can get noticeably darker with sun exposure.

Quick tip: Red marks sometimes fade temporarily when you press on them lightly with a finger, but this trick alone can’t reliably tell PIE and PIH apart. You can have both at once, and other skin changes can look similar.

3. Sun Protection Comes Before Everything Else

Photo by Margo Evardson · Unsplash

There’s a reason I’m putting this ahead of ingredients. Source after source treats sun protection as essential for mark care, because UV exposure can make brown marks (PIH) in particular darker and longer-lasting. No matter how good your actives are, skipping sunscreen can make marks last longer or get darker.

Make broad-spectrum SPF 30 or higher, every day your baseline. Sebestyen also points to daily sun protection as one of the most important steps for keeping marks from becoming more noticeable.
If brown marks are your main concern, a tinted sunscreen containing iron oxides can help, since it also blocks some visible light.
If you’re not used to wearing sunscreen, I’ve covered how much to use and how to reapply in How to Apply Sunscreen.

4. How to Fade Acne Marks: Ingredients That Help Each Type

The right ingredients depend a bit on whether you’re dealing with red marks or brown marks. Even so, think of these as “can help marks fade with consistent use,” not “erases them overnight.”

Red marks (PIE): The priority is reducing irritation and keeping your skin barrier stable. Ingredients like azelaic acid and niacinamide sometimes come up here too, but the home-care evidence isn’t as well established as it is for PIH.
Brown marks (PIH): Azelaic acid, niacinamide, vitamin C, retinoids, and glycolic acid are used to fade pigmentation. They work by reducing how melanin is produced or transferred, or by clearing away the pigmented surface cells.
Azelaic acid is one of the more versatile ingredients here, since it’s used for acne and is also studied for post-inflammatory pigmentation.

Rather than going all in on a single ingredient, the realistic formula is sunscreen + one or two proven ingredients + consistency. I compare two popular options for brown marks in more detail in Niacinamide vs. Vitamin C.

5. Order and Timeline — Impatience Is Your Biggest Enemy

Order: Calming the breakouts that are still coming up takes priority over treating marks. If new breakouts keep appearing, new marks will keep appearing too. The easiest order is: settle active acne and stabilize your barrier first, then, once the redness calms down, slowly add pigment care. (I’ve covered managing active breakouts in my routine for acne-prone skin.)
Timeline: Many brightening ingredients need a few weeks to several months of consistent use before you see a visible difference. How long it takes varies a lot depending on the type and depth of the mark, your skin tone, sun exposure, and whether new breakouts keep popping up. Older or darker pigmentation in particular can take several months or longer. So “I used it for 2 weeks and nothing changed” is honestly pretty normal.

6. The Habit That Makes Marks Last Longer — Don’t Squeeze

Just as important as treating marks is not creating new ones. And the number one rule there is: don’t squeeze.

Sebestyen explains that picking, squeezing, or repeatedly touching an inflamed spot can cause more inflammation and damage, which raises the chance of lingering discoloration or scarring. The American Academy of Dermatology (AAD) also notes that popping pimples makes scarring more likely. Even if a spot is driving you crazy, leaving it alone and letting it calm down is what ends up leaving fewer marks. (If you’re prone to picking at closed comedones, I wrote a separate post on closed comedones.)

What I Noticed Working at a K-Beauty Shop

When I worked at the beauty shop, the thing I told customers worried about marks most often was: “Rushing to get rid of them usually makes them last longer.” I sometimes saw people pile on strong exfoliating and brightening products to erase red marks fast, only to end up with more sensitive skin and redness that stood out even more.

When they switched gears — sticking with sunscreen, cutting back on irritation, and using just one or two ingredients consistently — the marks tended to fade steadily, even if it took time. Mark care turned out to be less about pushing hard and more about waiting patiently without irritating your skin.

When to See a Professional

When you see true scars that are sunken or raised
When pigmentation hasn’t budged for a long time (several months or more) despite good care
When the acne itself keeps flaring up badly

In these cases, it’s worth seeing a dermatologist rather than cycling through more home care. Noticeable pitted or raised scars in particular may need in-office treatment depending on the scar type, so it’s better not to spend ages trying to fix them with skincare.

The Bottom Line

Learning how to fade acne marks starts with telling apart “color only” marks from scars that changed your skin’s texture. For marks that are only discoloration, here’s the approach:

Separate marks (color) from scars (texture) — consider dermatology treatment for structural scars
Check whether it looks like a red or brown mark, but know that color alone can’t give an exact diagnosis
Sunscreen every day (especially important for keeping brown marks from darkening)
Use one or two ingredients suited to your mark type, consistently
Active breakouts first, pigment second / give it a few weeks to several months
Don’t squeeze — don’t create new marks or scars

If you can let go of the impatience, time does most of the work on marks that are just discoloration. Block the sun, cut the irritation, and stay consistent. It’s boring, but it’s the best way to fade acne marks and end up with fewer of them.

How to Fade Acne Marks After the Breakout Is Gone: Red Marks vs. Brown Marks