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Scars
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Skin Hair Nails

Scars

A scar is a permanent patch of skin that forms as part of the body's natural healing process following an injury or skin condition.

Overview

A scar is a permanent patch of skin that grows over a wound. It forms when the body heals itself after a cut, scrape, burn, or sore. Scars can also result from surgery, infections like chickenpox, or skin conditions like acne. They are often thicker, as well as pinker, redder, or shinier, than the surrounding skin.

Factors Influencing Appearance

The appearance of a scar depends on several factors:

  • The size and depth of the wound
  • The location of the wound
  • The duration of the healing process
  • Your age
  • Your inherited tendency to scar

Treatment

Scars usually fade over time but never disappear completely. If the appearance of a scar is a concern, various treatments may help minimize it, including:

  • Surgical revision
  • Dermabrasion
  • Laser treatments
  • Injections
  • Chemical peels
  • Creams

Frequently Asked Questions

diet rich in protein, vitamin C, zinc, and omega‑3 fatty acids supports collagen remodeling. Some clinicians recommend a short course of oral vitamin C (500 mg daily) for a few weeks, though evidence is limited. Strict sun protection (SPF 30+) is crucial; UV exposure can darken a scar and delay fading, so apply sunscreen daily for at least a year.
Most scars reach a “mature” phase between 6 and 12 months after the injury. During the first 3‑4 months they are still remodeling, so silicone products are most effective then. Many clinicians advise continuing silicone therapy for at least 3 months and then reassessing; if the scar has softened, flattened, and the color has faded, you can gradually taper off.
Topical silicone gel or sheets have the strongest evidence for reducing height and redness. Some OTC products contain onion extract (e.g., Mederma) or vitamin E, but studies show modest or no benefit. Apply a thin layer twice daily to clean, dry skin; silicone sheets should stay on for 12‑24 hours, then removed for a short break before re‑applying.
If the scar becomes raised, firm, and extends beyond the original wound margins (keloid) or continues to thicken after 3 months despite proper care, seek evaluation. Redness, itching, or pain that worsens, or a scar that interferes with movement, also warrant a dermatologist’s opinion for possible steroid injections or laser therapy.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

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