How does a scar form?
When the skin is damaged, a series of repair mechanisms are activated. First, the body clears damaged cells and bacteria. Next, new connective tissue is produced to close the wound. This new tissue contains more collagen and less elastin, making it firmer but less flexible than the original skin.
In the first weeks a scar is often red or purple. Over the following months it usually becomes lighter and flatter. However, some scars remain noticeable, especially when healing is disrupted by infection, excessive tension on the wound or a genetic tendency to form thick scars.
Types of scars
There are several forms of scarring. A normal scar is flat and gradually fades. In other cases, specific types of visible or problematic scars may develop, such as:
- Hypertrophic scars: thickened, red and itchy, but within the borders of the original wound
- Keloids: grow beyond the wound area and are often firm and sensitive
- Atrophic scars: lie deeper than the surrounding skin, such as acne scars
- Contractures: occur after burns and may cause the skin to tighten, sometimes limiting movement
The type of scar largely determines which care or treatment is appropriate.
Factors that influence scar formation
Not everyone heals in the same way. The final look and visibility of a scar are influenced by several factors, including:
- The depth and size of the wound
- The location on the body
- Skin type and pigmentation
- Age and overall health
- The amount of tension on the wound edges
- The aftercare during healing
Wounds under tension, such as those on joints or mobile areas, more often lead to wide or thickened scars.
Scar care
In the first weeks after an injury or procedure it is important to care for the scar properly. Keep the skin clean and prevent infection. Once the skin has closed, you can start using a scar cream with vitamin E or, later in healing, a silicone gel. These help keep the skin supple and may reduce itching or tightness.
Protect the scar from sunlight for at least six months. UV radiation can darken the skin and make the scar permanently more visible. Always use a high-SPF sunscreen when exposed to sunlight.
When to consider treatment
Most scars heal without complications. Treatment may be helpful when a scar:
- Is cosmetically bothersome
- Remains painful or itchy
- Limits movement
- Is discoloured or thickened
- Causes psychological discomfort
Depending on the type of scar, different treatments may be used, such as scar massage, laser therapy, injections or surgical correction. Sometimes a combination of techniques is required to achieve the best result.
Conclusion
Scarring is a normal and essential part of wound healing. However, the way scars form and mature varies from person to person and situation to situation. The final appearance is influenced by both internal and external factors.
While not every scar can be made invisible, proper care in the early healing period can make a significant difference. For persistent symptoms or prominent scars, a range of treatments can help improve the skin or reduce discomfort.
