Some scars rise like stubborn reminders. Others sink, leaving quiet dents in your skin. Both tell a different story, shaped by how your body heals.
Scars aren’t just surface marks. They form from deep biological processes beneath the skin, where inflammation, collagen, and tissue repair either overcompensate or fall short.
In Singapore, where sun exposure and skin sensitivity play a bigger role, recognising these differences isn’t just helpful. It’s necessary. Treatments that work for one type of scar may worsen another.
Here’s the difference between raised scars and sunken scars, and what really sets them apart.
What Happens Beneath a Healing Spot
When your skin experiences injury, whether from acne, a cut, or a surgical procedure, the body immediately begins a complex repair process. The first stage is inflammation, where immune cells rush to the site to prevent infection and clear debris. This is often when the wound looks red, swollen, or feels tender.
Next comes tissue formation. The body produces new skin cells and collagen to rebuild the damaged area. Collagen acts like scaffolding, offering structure and strength. But this phase doesn’t always follow the same script. Depending on genetics, skin type, and depth of injury, the collagen response can either overshoot or fall short.
Finally, during the remodelling phase, the body refines the new tissue over weeks or months. Ideally, collagen fibres align smoothly with the surrounding skin. But sometimes, this remodelling becomes irregular. The result is a visible scar that may become raised, sunken, or discoloured depending on how well the tissue rebuilds itself.
Healing is not just about closing the wound. It is about what happens beneath the surface, and that is where the story of raised and sunken scars begins to diverge.
Structural Changes That Lead to Raised Scars
Raised scars occur when the skin produces excess tissue during repair, similar to what happens in hypertrophic acne scars.
This happens when the healing process does not switch off at the right time. Instead of stopping once the wound is closed, fibroblasts (the cells responsible for producing collagen) continue working, leading to an overgrowth of scar tissue.
The result is a scar that sits above the skin’s surface, often thick, firm, and sometimes itchy.
These scars are generally classified as either hypertrophic, which stay within the original wound boundary, or keloid, which grow beyond it.
Individuals with darker or more reactive skin types, including many people in Singapore, tend to be more prone to these forms of scarring.
Key changes beneath the skin that lead to raised scars include:
- Excess collagen production beyond what the skin needs
- Prolonged inflammation that keeps healing cells active
- Poor regulation of scar tissue breakdown
- High tension on the skin during recovery
- Genetic tendency to form thicker or keloid scars
Why Sunken Scars Lose Volume Instead
Not all scars form with excess tissue. In some cases, the healing process leaves behind a loss of structure.
Sunken scars, also known as atrophic scars, occur when the skin does not produce enough collagen and support tissue to fully repair the damaged area. This creates a dip or hollow in the skin that can be shallow or deep, depending on how much volume is lost.
Unlike raised scars that result from an overactive response, sunken scars reflect an under-response. They are common after inflammatory skin conditions like acne or chickenpox, where tissue destruction happens below the surface.
Without adequate rebuilding, the skin collapses inward during healing.
Loss of Support Structures
Sunken scars form when critical elements beneath the skin are damaged or destroyed, including collagen, fat, and connective tissue.
If the inflammation was deep or prolonged, the body may struggle to replace what was lost. This lack of structural support leads to visible depressions on the skin’s surface.
Types of Sunken Scars
There are three main types of atrophic scars, each with its own appearance and severity:
- Ice pick scars: Deep, narrow scars that resemble small punctures
- Boxcar scars: Wide, shallow scars with sharp edges
- Rolling scars: Wavy or undulating depressions caused by tethered tissue beneath the skin
These variations often require different approaches in treatment, which is why proper classification is important before choosing a solution.
7 Key Factors That Influence Long-Term Texture
Scar texture depends on skin type, habits, and how the skin heals. Some factors you can control, others you cannot. Knowing them helps you heal better.
Here are the different key factors that influence how scars form and feel over time.
1. Skin Type and Tone
Oily, acne-prone, or highly pigmented skin is more reactive during healing. This can result in either raised scars or uneven pigmentation.
Those with darker skin tones also tend to produce more collagen and melanin, which increases the risk of thick or discoloured scars. Custom treatment plans must account for this.
2. Depth of Injury
Shallow injuries usually heal smoothly. Deeper damage, however, reaches layers of skin that contain vital support structures like fat and connective tissue.
When these are compromised, the skin cannot rebuild evenly. This is often why sunken scars develop after cystic acne or surgery. The deeper the trauma, the greater the texture change.
3. Duration of Inflammation
The longer your skin stays inflamed, the more damage occurs at a structural level. Inflammation signals the body to act, but if left unchecked, it can overstimulate or exhaust healing functions.
Chronic acne, for instance, often leads to a mix of raised and sunken scars because of prolonged inflammation within the dermis.
4. Genetics
Your genetic blueprint influences how your skin heals. Some people naturally overproduce collagen and are more prone to keloids, while others produce too little and end up with atrophic scars.
If raised or sunken scars run in your family, you may need to take earlier preventive or therapeutic steps after injury.
5. Age
Younger skin heals faster and has better collagen support, which helps prevent long-term texture changes. As we age, the skin becomes thinner, slower to repair, and less elastic.
This means older individuals are more prone to scarring irregularities and may require more intensive treatments to stimulate proper skin regeneration.
6. Sun Exposure
Ultraviolet rays interfere with the healing process. They harden scar tissue, stimulate pigmentation, and reduce the effectiveness of treatments.
Unprotected sun exposure can also prolong inflammation. In tropical climates like Singapore, consistent use of broad-spectrum sunscreen is not optional; it is one of the most effective ways to protect healing skin.
7. Post-Injury Care
Neglecting aftercare can turn a minor wound into a lasting scar. Picking, scrubbing, or using harsh products delays healing and disrupts tissue repair.
Simple steps like gentle cleansing, regular hydration, sun protection, and avoiding trauma to healing skin make a measurable difference in how smooth or textured a scar becomes.
When Professional Guidance Is Beneficial
Not all scars respond to home care or over-the-counter products. When a scar changes texture, becomes painful, or does not fade over time, it is a sign that professional help may be needed. Early intervention can make a significant difference, especially for raised or sunken scars that are still developing.
Aesthetic doctors and dermatologists assess not just the scar, but the skin type, healing pattern, and any underlying conditions. This helps them tailor treatments such as lasers, microneedling, injectables, or topical prescriptions to suit the individual. Trying to treat the wrong type of scar with the wrong method can worsen its appearance or delay recovery.
In Singapore, where climate, skin tone diversity, and sun exposure all play a role, expert advice becomes even more important. Clinics with experience in Asian skin and scar management can offer safer, more effective options for long-term results.
Conclusion
Raised and sunken scars may seem like simple surface issues, but they reflect very different healing behaviours beneath the skin. One involves excess collagen, while the other reveals a lack of it.
Understanding these differences is essential if you want to choose the right treatment. What works for one scar type may worsen another, especially without proper guidance.
Factors like skin type, injury depth, and aftercare all influence the final texture and appearance of scars. No two cases are exactly alike.
If a scar continues to bother you, consider consulting a professional for tailored advice and long-term results that suit your skin.