Scar tissue doesn’t fully “heal” back to normal skin, but it does change significantly over time, and several treatments can speed that process or dramatically improve a scar’s appearance. A scar forms when your body replaces damaged skin with a quick, disorganized patch of collagen fibers. The good news: your body naturally remodels that patch for months after an injury, and the right interventions during and after that window can make a real difference.
How Your Body Remodels Scars on Its Own
When a wound closes, your body initially fills the gap with a temporary type of collagen (type III) that’s thinner and weaker than what healthy skin contains. Over the following months, enzymes gradually break down that temporary collagen and replace it with the stronger, more organized type I collagen found in normal skin. This remodeling phase is why most scars look noticeably better after several months without any treatment at all.
During remodeling, blood vessels recede, inflammation fades, and the scar flattens and softens. A scar is generally considered “mature” once this process wraps up, though the timeline varies widely. Small, clean surgical scars may mature in a few months. Larger or deeper scars, especially from burns, can continue changing for a year or longer. Even after full maturation, scar tissue only recovers about 80% of the original skin’s tensile strength, so it’s always somewhat more fragile than the surrounding skin.
Silicone: The Best-Studied Topical Option
Silicone gel sheets and silicone-based gels are the most evidence-backed topical treatment for scars. In clinical studies, silicone products have produced an 86% improvement in texture, 84% in color, and 68% in height. They work by trapping moisture in the top layer of skin. That extra hydration signals the collagen-producing cells underneath to slow down, which reduces the overproduction of scar tissue. Silicone also creates a barrier against bacteria, which matters because bacterial colonization can trigger excess collagen buildup.
You typically apply silicone sheets or gel daily for at least two to three months. They’re available over the counter and are used on both raised scars and newer scars that haven’t yet matured. Starting early, once the wound has fully closed, tends to produce the best results.
Onion Extract Gels
Over-the-counter scar gels containing onion extract (the active ingredient in products like Mederma) show modest but real benefits. In a controlled trial, scars treated with onion extract gel were rated significantly softer than untreated scars at two weeks, four weeks, and eight weeks. The improvement was consistent across both patient and investigator ratings. The effect is subtler than silicone, but onion extract gels are inexpensive, easy to use, and work best on newer scars that are still in the remodeling phase.
Skip the Vitamin E
Vitamin E is one of the most popular home remedies for scars, but clinical evidence doesn’t support it. In a study of surgical scars, topical vitamin E either had no effect or actually worsened the appearance of scars in 90% of cases. On top of that, 33% of patients developed contact dermatitis, an itchy, red skin reaction, from the vitamin E itself. Despite its reputation, applying vitamin E oil to scars is more likely to cause irritation than improvement.
Microneedling for Indented Scars
Atrophic scars, the pitted or indented kind left by acne or chickenpox, sit below the surface of the surrounding skin. These scars respond well to microneedling, a procedure that uses fine needles (typically 1.5 to 2 mm long for acne scars) to create tiny punctures in the scar tissue. Those micro-injuries trigger a fresh wound-healing response: the body produces new collagen and elastin, thickening the skin and gradually raising the depressed scar closer to the level of surrounding tissue.
Clinical reviews of randomized controlled trials consistently show that microneedling improves the appearance of atrophic acne scars, with visible improvement starting after about three sessions. Patient satisfaction is high regardless of the specific device used. Microneedling is performed by dermatologists or aestheticians, though at-home dermarollers with shorter needles exist for milder cases. Professional treatments use longer needles and reach deeper layers where collagen remodeling has the most impact.
Laser Treatments for Raised or Discolored Scars
Lasers work by delivering controlled energy into scar tissue, either to break down excess collagen, reduce redness, or stimulate new collagen growth. Two of the most common types are fractional CO2 lasers, which vaporize tiny columns of scar tissue to trigger remodeling, and pulsed dye lasers, which target the blood vessels that give scars their red or purple color.
A clinical comparison of the two found them equally effective for hypertrophic (raised) scars. After four sessions, both laser types reduced scar severity scores by roughly 40% on a standardized scale. Laser treatment typically requires multiple sessions spaced weeks apart, and results continue to improve between sessions as new collagen forms. Redness, swelling, and peeling are common after each session, with recovery taking a few days to a week depending on the laser’s intensity.
Steroid Injections for Keloids and Raised Scars
Keloids and hypertrophic scars that stay thick, raised, and uncomfortable may respond to corticosteroid injections directly into the scar tissue. The steroid reduces inflammation and slows collagen production, causing the scar to flatten and soften. The injections are given every four to eight weeks, usually over two to three sessions.
The results vary: regression rates range from 50% to 100%, meaning some scars shrink dramatically while others respond only partially. The main drawback is recurrence. About a third of keloids return within the first year after treatment, and up to half come back within five years. For this reason, steroid injections are often combined with other approaches, like silicone sheeting or compression, to maintain results.
Surgical Scar Revision
When a scar is wide, tight, or positioned in a way that restricts movement or looks conspicuous, surgical revision may be the best option. The goal isn’t to eliminate the scar entirely but to replace a bad scar with a better one. Surgeons use techniques that redirect the scar line to follow the skin’s natural tension lines, making it far less visible.
One common approach rearranges the scar into a zigzag pattern, which breaks up the straight line that the eye naturally follows. This technique also lengthens contracted scars that pull on surrounding skin and limit movement, a frequent problem after burns. It’s particularly useful for releasing tight scars across joints or in the webbed spaces between fingers. Another technique cuts the scar edges into interlocking triangles, which is well suited for scars on the forehead, cheeks, or jawline where the skin doesn’t stretch much.
Surgical revision is typically considered only after a scar has fully matured, since operating on an immature scar means working on tissue that’s still actively remodeling and may improve on its own.
Protecting a Healing Scar
New scar tissue lacks the pigment cells that help normal skin defend against ultraviolet light. That makes immature scars especially vulnerable to sun exposure, which can cause permanent darkening or discoloration that’s difficult to reverse. Covering a healing scar with clothing or applying broad-spectrum sunscreen with at least SPF 30 is one of the simplest and most effective things you can do during the months-long remodeling phase. This is especially important for people with darker skin tones, who are more prone to post-inflammatory hyperpigmentation.
Gentle massage is another low-tech approach that can help. Rubbing a healing scar in circular motions for a few minutes daily helps break up collagen bundles and can improve flexibility in tight scars. The pressure doesn’t need to be intense. Consistent, moderate pressure over weeks is what matters.