Acne Scars vs Marks: How to Tell the Difference
Medically reviewed by Dr. Kate Healy, MB BCh BAO – 2026-07-20
This information is for general education and does not replace a personalised medical assessment, diagnosis or prescription.
Acne scars vs acne marks: the quick distinction
The simplest distinction is colour versus texture. If an area is flat but looks red, pink, brown or grey after a spot has healed, it is more likely to be a post-inflammatory mark. If the surface is indented, wavy, pitted or raised, scar tissue may be present.[1][2]
The two can occur together. A shallow depression may also be red or pigmented, and active acne can sit beside older marks and scars. That is one reason photographs or a mirror can be misleading: changes in lighting may hide contour while making colour look more prominent.
Merrion's acne concern guide explains how active breakouts, marks and scarring risk fit into a wider care plan. The table below offers a starting point, not a self-diagnostic test.
| Feature | Acne marks — PIH or PIE | Acne scars |
|---|---|---|
| What changes | Colour | Texture or contour |
| Typical appearance | Flat red, pink, brown or grey areas | Depressions, pits, waves or, less commonly, raised tissue |
| Common terminology | Post-inflammatory erythema or hyperpigmentation | Ice-pick, boxcar, rolling; raised scars can also occur |
| Can it fade without a procedure? | Often, but timing varies | Usually does not fully resolve on its own |
| General direction | Pigment/redness protection and targeted skincare | Collagen-remodelling or resurfacing options after assessment |
| Important limitation | Persistent marks may need assessment | Scar type, active acne and skin type affect suitability |
For broader information about treatment planning after the distinction is clear, visit Merrion's acne scarring assessment and treatment options.
What red and brown acne marks are
A flat mark is the skin's visible record of inflammation rather than a change in its structure. Clinicians often use two terms:
- Post-inflammatory erythema (PIE) describes persistent red or pink colour after inflammation. It reflects vascular and inflammatory change and can be more obvious in lighter skin tones, although it can occur in any skin.
- Post-inflammatory hyperpigmentation (PIH) describes excess pigment left after inflammation. It may look tan, brown, dark brown or grey and is particularly common and persistent in more deeply pigmented skin.[2][3]
PIE and PIH are not mutually exclusive, and online labels do not always capture what is actually present. Sun exposure, repeated inflammation and picking can make colour changes more noticeable. Some irritation from overly active skincare can also prolong redness or create new pigmentation.
Colour terminology can also be imperfect outside a clinical exam. Redness may appear purple or brown in deeper skin tones, and pigment can look grey when it sits more deeply. Pressing on the skin or comparing internet photographs is not a reliable way to classify it. The useful observation is whether the surface remains flat and whether the colour is changing over time.
Plain language is useful here: a red mark and a brown mark may need different strategies, even though both are flat. The first priority is usually to reduce ongoing inflammation and protect the skin from ultraviolet exposure. Targeted skincare or a procedure may then be considered according to colour, skin type and tolerance.
Because every new inflammatory lesion can leave another mark, treating the colour alone may become frustrating if breakouts are still active. A thoughtful plan often separates immediate priorities from later ones: first reduce new inflammation and support the barrier, then reassess what colour remains once the skin is calmer. This avoids chasing each mark with an increasingly complex routine.
What true acne scars are
A true scar changes the skin's architecture. Inflammation can disrupt normal collagen repair, leaving too little support in one area or, less commonly, excess scar tissue. The result may be a depression, an uneven contour or a raised area.[1]
Scarring is more likely after deeper, longer-lasting inflammatory lesions, but severity is not the only factor. Individual healing tendency, delay in controlling active acne and manipulation of lesions can all influence risk. Scarring is not a sign that someone failed to care for their skin correctly.
Once texture has changed, topical products may support the surrounding skin and help colour, but they cannot simply replace missing collagen or release tethered scar tissue. That is why broad promises to erase scars with one cream are unrealistic.
Scar assessment is done with movement and angled light as well as a straight-on view. Some depressions become more visible when the light moves across them; others are tethered and behave differently when the skin is gently stretched. These observations help explain why two scars that look similar in a photograph may respond differently to the same procedure.
Ice-pick, boxcar and rolling scars
Depressed acne scars are often described by shape. Ice-pick scars are narrow and deep. Boxcar scars are wider depressions with more defined edges. Rolling scars create broader undulations, often because fibrous attachments pull the surface downward. A person may have more than one type at the same time.[1]
Raised scars also occur. These may stay within the original area of inflammation or extend beyond it, depending on the person's healing pattern. They need a different clinical approach from depressed scars, which is why “acne scarring” is not one uniform treatment category.
Mixed scarring is common, so a plan may need more than one method or more than one treatment depth. The order can matter as well: a tethered rolling scar, a sharp-edged boxcar scar and a narrow ice-pick scar are different structural problems. This is clinical reasoning, not a menu from which a patient is expected to choose. A careful examination helps set expectations for each component.
Do acne marks fade? Do scars go away?
Flat red or brown marks often fade gradually as inflammation settles and pigment is cleared, but there is no single reliable timeline. Skin tone, depth of inflammation, ultraviolet exposure, repeated breakouts and individual biology all matter.[2][3] A mark that has persisted for some time is not necessarily permanent, but it may be worth assessing before adding more active products.
Textural scars usually persist without a procedure. They may look softer as redness settles or as the skin changes with time, yet the underlying contour often remains. “Permanent” can sound discouraging; a more useful way to think about scars is that they generally require a collagen-remodelling, resurfacing or scar-specific approach if improvement is desired.[1]
No procedure can promise complete removal, and improvement depends on scar type, skin type, active acne, healing response and the treatment plan. A realistic plan may involve stages rather than one intervention.
Why treatment depends on what is actually present
When the main concern is colour, the plan may focus on controlling active acne, daily sun protection, barrier support and carefully selected ingredients or procedures for redness or pigment. When the main concern is texture, the conversation shifts toward how the scar is shaped and how the skin tends to heal.
For selected textural scars, microneedling may be discussed as a way to stimulate controlled collagen remodelling. Laser resurfacing options for scarring may also be considered. Neither link is a recommendation for an individual reader: scar type, skin tone, active inflammation, previous treatment and downtime all affect suitability.
Treatment tolerance is part of the clinical decision. Skin that develops pigment easily may need a different pace or preparation from skin whose main issue is persistent redness. A history of raised scarring, recent tanning, medication use and previous reactions can also change the risk-benefit discussion. The procedure name alone never tells the whole story.
Active acne should be part of the plan, not treated as a separate afterthought. Continuing inflammation can create new marks or scars while older ones are being addressed. Canadian guidance emphasises timely acne management in part to reduce the risk of scarring and pigment change.[4]
When to book a skin assessment
An assessment is useful when you are unsure whether a change is flat or textural, when several types seem to coexist, or when active acne is still producing new marks. It is also sensible before investing in a scar-focused procedure, because the same treatment will not suit every scar or skin.
During the visit, the clinician can examine the skin in consistent lighting, look across angles, and consider colour, contour, activity, sensitivity and healing history. The aim is to set a realistic priority: prevent new damage, support fading of marks, address texture, or sequence these steps over time.
It also helps to bring a list of current products and any previous procedure dates. This makes it easier to identify irritation, avoid unnecessary duplication and plan around healing. You do not need to arrive knowing which treatment you want; the purpose of the assessment is to clarify the concern before choosing a direction.
Frequently asked questions
What is the difference between acne scars and acne marks?
Marks are flat changes in colour after inflammation; scars change texture or contour. They can coexist, so an area may have both pigmentation or redness and a depression.[1][2]
Do acne scars go away on their own?
True textural scars usually do not fully resolve on their own. Their appearance may soften, but meaningful improvement often requires a scar-specific procedure selected after assessment.[1]
Are acne scars permanent?
Scar tissue tends to persist, but “permanent” does not mean nothing can improve. The degree of possible improvement depends on scar type, skin characteristics, active acne and response to treatment; complete removal should not be promised.
How long can red or brown acne marks take to fade?
There is no fixed timeline. Some marks fade steadily, while others persist, particularly when breakouts continue or the skin is exposed to ultraviolet light. Skin tone and the depth of inflammation also influence the course.[2][3]
Can topical retinoids help marks or scars?
Prescription retinoids may be considered within an acne plan and can support cell turnover and some pigment concerns. They do not lift every textural scar, and they can irritate the skin if used inappropriately. Suitability should be discussed with a physician rather than assumed from a product category.
Why does active acne need to be considered before scar treatment?
Ongoing inflammation can create new marks and scars. Controlling active breakouts may therefore be the first priority or may need to proceed alongside a carefully staged scar plan.[4]
Next step
Clarify whether the main change is redness, pigmentation, texture — or a combination — before treatment is planned.
Related reading
Sources
[4] Asai Y, et al. Management of acne: Canadian clinical practice guideline. CMAJ. 2016;188(2):118–126.
