Surgical scars improve significantly with consistent care, but the process takes patience. Your body needs up to two years to fully remodel a surgical wound, and the steps you take during that window directly shape how the final scar looks and feels. The most effective approaches combine simple at-home treatments with sun protection and, in some cases, professional procedures.
How Surgical Scars Heal
Understanding the timeline helps you match the right treatment to the right phase. After surgery, your body moves through three overlapping stages of repair.
In the first days and weeks, inflammation dominates. Blood vessels open to deliver oxygen and nutrients, while immune cells called macrophages fight bacteria and release growth factors that kick off tissue repair. Redness, swelling, and tenderness during this phase are normal, not a sign something is wrong.
Next comes the rebuilding phase, when your body lays down collagen to form a scaffold of new tissue. This is the period when the scar is actively forming, and it’s the most important window for intervention. The wound gains strength quickly over the first six weeks and reaches about 80% of its original strength by three months.
The final remodeling phase is the longest. Your body reorganizes and refines collagen fibers, gradually softening and flattening the scar. Depending on the size and depth of the incision, full remodeling can take one to two years. Most scar treatments work by influencing this collagen remodeling process.
Silicone Sheets and Gels
Silicone is the best-supported at-home treatment for surgical scars. It works by covering the scar and trapping moisture in the skin underneath. When a new scar dries out, skin cells send chemical signals that trigger excess collagen production, which is exactly what creates thick, raised scar tissue. Silicone mimics the barrier function of healthy skin, normalizing moisture levels so those signals never fire.
Beyond hydration, silicone sheets gently redistribute tension across the wound edges. Tension is one of the key drivers of abnormal scarring, so reducing it helps the scar stay flat. Silicone also limits the formation of new blood vessels at the scar site, which tones down redness and keeps the healing process from overreacting. Some researchers have even proposed that friction between silicone and skin creates a mild static charge that helps collagen fibers align more neatly.
You can start silicone once the incision has fully closed and any sutures or staples are removed. Most products are worn 12 to 24 hours a day for at least two to three months. Both adhesive sheets and squeeze-tube gels are available over the counter, and the choice often comes down to scar location. Sheets work well on flat, accessible areas like the chest or abdomen. Gels are easier for joints, the face, or areas where a sheet won’t stick.
Protect Your Scar From the Sun
New scars are extremely vulnerable to UV damage for the first 12 to 18 months. Sun exposure during this window causes hyperpigmentation (dark discoloration) and disrupts the collagen matrix, making the scar more visible and harder to improve later. Wear sunscreen with at least SPF 30 over the scar any time you’re in sunlight. Covering the scar with clothing or silicone sheets also provides reliable protection. This single habit is one of the easiest and most impactful things you can do.
Scar Massage
Once your incision is fully healed and your surgeon gives the go-ahead (typically a few weeks after surgery), gentle massage can help break up collagen adhesions and improve scar flexibility. Use your fingertips to apply moderate pressure in small circular motions along the scar line. You can also work perpendicular to the scar, pushing the tissue side to side. Sessions of five to ten minutes, once or twice daily, are a reasonable starting point. Massage is most useful during the first 18 months while collagen is still being actively remodeled.
Onion Extract Gels
Products containing onion extract are widely marketed for scar treatment, but the clinical evidence is underwhelming. A meta-analysis of randomized controlled trials found no significant difference between onion extract gel and other treatments, including plain petroleum jelly and silicone products, when scars were assessed by both investigators and patients. Multiple head-to-head studies showed onion extract performed about the same as petroleum jelly. In at least one trial, silicone gel and silicone sheets outperformed it. If you’re choosing between the two, silicone has a stronger evidence base.
Nutrition for Scar Healing
Your body burns through vitamin C rapidly at a wound site because it’s essential for collagen production. Vitamin C drives the chemical process that stabilizes collagen molecules, giving your new tissue structural integrity. Deficiency impairs wound healing directly, and supplementing in deficient individuals produces measurable improvements. You don’t need megadoses. Eating plenty of fruits, vegetables, and other vitamin C-rich foods during recovery is usually enough for someone with a normal diet. Protein is equally important since collagen itself is a protein, and your body needs a steady supply of amino acids to build it. Zinc also plays a supporting role in tissue repair and is found in meat, shellfish, legumes, and seeds.
When Scars Become Abnormal
Not all surgical scars heal the same way. Two types of raised scarring are worth knowing about because they require different treatment strategies.
Hypertrophic scars are thick, raised, and often red, but they stay within the boundaries of the original incision. They typically appear within the first month after surgery and often begin to flatten on their own after about six months. These respond well to silicone, massage, and time.
Keloids are different. They grow beyond the edges of the original wound and don’t regress on their own. They can appear around three months after surgery and continue to expand. Keloids are more common in people with darker skin tones and tend to form on the chest, shoulders, and earlobes. If your scar is spreading past where the incision was, that distinction matters because keloids typically need professional treatment.
Professional Scar Treatments
For scars that don’t respond to at-home care, or for people who want faster cosmetic improvement, several in-office options exist.
Laser Resurfacing
Fractional CO2 laser is one of the most studied professional treatments for surgical scars. The laser creates microscopic columns of damage in the scar tissue, triggering your body to replace disorganized collagen with healthier, more evenly structured tissue. A major meta-analysis found that timing matters enormously: treatment started within one month of surgery produced significant scar improvement, while treatment started more than three months after surgery showed no meaningful benefit over untreated scars. Even a single session within that first month can produce results. If you’re considering laser treatment, discuss the timing with your surgeon before your procedure so you can plan ahead.
Steroid Injections
For hypertrophic scars and keloids, corticosteroid injections directly into the scar tissue can reduce thickness, redness, and itching. The injections work by suppressing collagen overproduction. They’re typically given in a series of sessions spaced several weeks apart. This is one of the most common first-line treatments for keloids.
Pressure Therapy
Custom pressure garments that apply steady compression over a scar are sometimes used after major surgeries or burns. The sustained pressure limits blood flow to the scar and helps flatten it over time. These are worn for many hours a day over several months.
Signs of Infection vs. Normal Healing
Some redness and swelling around a fresh incision is part of normal inflammation. But certain signs point to infection and need prompt attention. Watch for thick, cloudy, white or cream-colored discharge from the wound, a noticeable odor, the incision line reopening or widening, redness spreading well beyond the wound edges, increasing pain when you touch the area, skin that feels hot around the incision, or fever above 101°F (38.4°C) with chills or sweating. Normal healing inflammation improves gradually over days. Infection gets worse.