Scars do not automatically grow larger as you get older. The first step is to identify what has changed. A broader surgical scar, a growing keloid, and an old acne scar casting a deeper shadow are not the same problem.
A Scar Getting Older Is Different From Your Skin Getting Older
A new scar continues to change after the wound closes. During this process, called maturation, the body reorganises collagen—the protein that supports skin. As explained in Lin and Lai’s review of scar formation, the scar may change in colour, firmness, and height as the tissue settles. [1]
Many scars gradually fade and flatten. NHS guidance on scars explains that changes can continue for two years or more. [4] This does not mean every scar follows the same timetable or disappears completely.
Age-related changes in the surrounding skin are a separate process. The American Academy of Dermatology notes that depressed acne scars can become more noticeable as skin loses firmness. [3]
A scar can therefore look more prominent without actively producing more scar tissue. Comparing its actual borders and height is more useful than assuming that increased visibility means growth.
Scar Size and Aging: Wider, Thicker, or Simply More Visible?
“Bigger” can describe several different observations. Before choosing treatment, try to identify which one applies.
| Change you notice | Possible explanation | Important distinction |
|---|---|---|
| A line becomes broader but remains fairly flat | Widening under tension during healing | Stretching is different from raised scar growth |
| A scar becomes thicker within the original wound | Hypertrophic scarring | It may gradually flatten over time |
| Raised tissue extends beyond the original injury | Keloid growth | It behaves differently from an ordinary maturing scar |
| An old depression looks more obvious | Reduced firmness in surrounding skin | Greater visibility does not necessarily mean new tissue growth |
| A scar pulls or restricts movement | Scar contracture, meaning tightening | Function matters even when the scar does not look larger |
These patterns are described in scar reviews and specialist scar-revision guidance. They help explain the possibilities but cannot replace an examination. [1–3,5]
If you have photographs from earlier stages, bring them to your appointment. Similar lighting, camera distance, and body position make comparisons more useful.
Scar Stretching Causes: Why a Healing Line Can Widen
Tension across a healing wound can contribute to widening. This means the skin is being pulled across the wound while the new tissue is forming and strengthening. [2]
Location matters. Areas such as the shoulders, chest, and sites near moving joints experience mechanical forces. The review by Lin and Lai also describes how repeated stretching can promote or aggravate excessive scar formation in susceptible tissue. [1]
Widening and thickening can therefore share a contributing factor—tension—while remaining different outcomes. A wide, flat scar is not automatically a keloid.
This evidence mainly concerns healing wounds and abnormal scar formation. It does not establish that ordinary daily movement will make every old, mature scar progressively larger.
After surgery, follow your team’s instructions about activity, wound support, and returning to exercise. If a scar crosses a joint, ask for advice suited to that location rather than avoiding movement indefinitely.
Why Old Acne Scars May Become More Noticeable
Depressed scars sit below the surrounding skin surface. As skin loses firmness with age, these depressions can become easier to see. The American Academy of Dermatology explains this change specifically for depressed acne scars. [3]
That is an important limit to the evidence. It should not be turned into a claim that every surgical, burn, or raised scar enlarges with age.
When discussing aging skin scar changes, describe whether the concern is depth, shadowing, colour, or a genuinely wider border. These details help a clinician distinguish changes in surrounding skin from changes in the scar itself.
Photographs taken under harsh side lighting can make depressions look different from photographs taken in soft, even light. Use consistent conditions before drawing conclusions about whether a scar has changed.
Treatment, if wanted, should address the scar pattern and the surrounding skin. As outlined in AAD scar-treatment guidance, treatment for raised tissue serves a different purpose from treatment intended to improve a depression. [5,6] Our guide to pitted acne scar treatment explores the latter concern.
Does Growing Scar Tissue Mean a Keloid?
Not necessarily. Hypertrophic scars and keloids both involve excessive scar tissue, but they behave differently. The review by Gauglitz and colleagues explains these distinctions. [2]
Hypertrophic scar growth remains within the original wound boundaries. The scar may become raised, red, firm, or uncomfortable before gradually settling. This can happen after surgery, burns, or other injuries. [2]
A keloid extends beyond the original wound into surrounding skin. It can continue growing and usually does not flatten spontaneously in the same way. It may also itch or hurt. [2]
Neither pattern should be explained simply as “getting older”. The type of scar and its healing behaviour are more relevant. Our keloid vs. hypertrophic scar guide explains why the distinction matters.
A clinician should assess ongoing enlargement, particularly if the scar’s diagnosis has never been confirmed. Evidence about hypertrophic burn scars should not automatically determine treatment for a true keloid—or for a flat scar that has widened.
Which Changes Should You Have Checked?
Arrange an appointment if a scar is becoming thicker, extending outward, causing persistent discomfort, or restricting movement. You can also seek advice simply because its appearance bothers you. [2,4,6]
A previously stable scar that develops an unexplained lump or other unusual change deserves examination. Dermatologists sometimes need to distinguish scar tissue from another skin condition. [6]
Seek prompt medical advice if the area becomes increasingly painful, swollen, warm, or starts draining pus. These changes should not be dismissed as normal aging. [4]
An examination can assess the scar’s boundaries, texture, and attachment to deeper tissue. Your clinician may also ask about the original injury, previous treatments, and any history of keloids.
What Care and Scar Revision Options May Help?
The aim is to improve a specific problem, such as width, raised tissue, discomfort, or restricted movement. No treatment can guarantee completely scar-free skin. [5]
Care While the Scar Is Settling
For healed scars, sun protection is part of routine care. NHS guidance recommends covering the scar when practical and using sunscreen with SPF 30 or higher. [4]
Silicone gel or sheets may help selected raised scars. The reviews by Lin and Lai and Gauglitz and colleagues discuss their use particularly in hypertrophic scarring and scar prevention. This evidence does not mean silicone will reliably narrow an established wide, flat scar. [1,2]
Use silicone only once the wound has closed. Sheets can cause irritation or skin breakdown, so stop and ask for advice if these develop. [6]
Treatment Matched to Scar Type
Steroid injections may help reduce selected hypertrophic scars or keloids. Possible effects include skin thinning and colour changes, so they require appropriate assessment and monitoring. [2,6]
Laser treatment may address selected colour or texture concerns. It is not a universal solution for scar width, and treatment can cause pigment changes or other complications. [2]
For a widened or poorly positioned scar, a surgeon may discuss revision. The American Society of Plastic Surgeons describes scar revision as an attempt to make a scar less conspicuous, not erase it. [5]
Timing matters because an immature scar may still improve. Keloid removal also needs special planning: surgery alone carries a substantial risk of recurrence, sometimes with a larger scar. [2]
Practical Patient Checklist
- Identify whether the change involves width, height, depth, colour, or movement.
- Record when you first noticed it and whether it is continuing.
- Compare photographs taken under similar conditions.
- Tell your clinician about previous scar treatments and abnormal scarring.
- Ask which feature a proposed treatment is expected to improve.
- Seek prompt advice for increasing pain, warmth, swelling, or pus. [4]
Conclusion
Understanding changes in scar size with aging starts with separating actual widening or thickening from increased visibility. Many scars settle with time, while keloids, stretched scars, and depressed acne scars follow different patterns. [1–3]
Book a consultation today if your scar is changing, uncomfortable, or affecting movement, and discuss care matched to the change you have noticed.
Read Also / See Related
- Why is my scar getting bigger? — Explore possible explanations for continued scar growth and when reassessment is useful.
- Pitted acne scar treatment — Learn about treatment considerations for depressed scars that become more noticeable.
- Facial scar healing — Understand the difference between wound closure, scar maturation, and longer-term changes in appearance.
Sources
- [1] Lin X., Lai Y. — 2024 — Scarring Skin: Mechanisms and Therapies. International Journal of Molecular Sciences, 25, 1458. Uploaded PDF reviewed. DOI: 10.3390/ijms25031458.
- [2] Gauglitz G.G., Korting H.C., Pavicic T., Ruzicka T., Jeschke M.G. — 2011 — Hypertrophic Scarring and Keloids: Pathomechanisms and Current and Emerging Treatment Strategies. Molecular Medicine, 17(1–2), 113–125. Uploaded PDF reviewed. DOI: 10.2119/molmed.2009.00153.
- [3] American Academy of Dermatology — Scars: Will my scar go away? Scar fading and age-related visibility.
- [4] NHS — Scars. Scar changes, self-care, and when to seek help.
- [5] American Society of Plastic Surgeons — Scar Revision. Treatment goals and scar types.
- [6] American Academy of Dermatology — Scars: Diagnosis and treatment. Assessment and treatment guidance.
Medical disclaimer
The information in this article is provided for general educational purposes and does not replace professional medical advice, diagnosis, or treatment. Consult a dermatologist or another qualified healthcare professional about your symptoms and treatment options. Do not disregard professional medical advice or delay seeking care because of information you have read on KeloidCare.org. Responses to keloid treatments vary, and individual results cannot be guaranteed.