The single most effective thing you can do to prevent a scar is keep the wound moist while it heals. Research dating back to the 1960s has consistently shown that moist wounds heal up to 50% faster than dry ones and produce less visible scarring. Beyond that initial step, scar prevention is a months-long process that involves protecting new skin, reducing tension on the wound, and giving your body the raw materials it needs to rebuild tissue cleanly.
Why Wounds Scar in the First Place
When your skin is cut, burned, or scraped deeply enough to reach below the outer layer, your body kicks off a repair process that unfolds in stages. First comes inflammation: blood clots, swelling, and redness as your immune system clears out debris and bacteria. This lasts several days. Next, your body lays down new collagen fibers to bridge the gap in the tissue. These fibers are strong but disorganized, like a patch job rather than the original weave of your skin.
The final phase, remodeling, is where the collagen gradually reorganizes into something closer to normal skin. This stage starts within the first few weeks and can take a full year to complete. Anything you do (or fail to do) during these months influences whether the final result is a faint line or a raised, discolored scar.
Keep the Wound Moist, Not Dry
The old advice to “let it air out” and form a scab actually slows healing and worsens scarring. A hard, dry scab acts as a barrier that blocks new skin cells from migrating across the wound bed. When the wound stays moist, those cells can slide horizontally through a thin layer of fluid and close the gap much faster.
In practice, this means applying a thin layer of petroleum jelly (plain Vaseline works fine) and covering the wound with a bandage. Change the bandage daily or whenever it gets wet or dirty, and reapply the petroleum jelly each time. Continue this until the wound has fully closed. You don’t need an antibiotic ointment for clean, minor wounds. Petroleum jelly provides the moisture barrier without the risk of an allergic reaction.
Reduce Tension on the Wound Edges
As a wound heals, the normal tension in your skin pulls the edges apart. This is one of the main reasons scars widen over time. The effect is strongest on wounds that cross joints, sit on the chest or shoulders, or are oriented perpendicular to your skin’s natural tension lines.
For surgical incisions, doctors often apply adhesive strips (Steri-Strips) across the wound to hold the edges together after stitches come out. You can ask about tension-reducing tape or silicone strips for the same purpose on any linear wound. Keep the area supported for several weeks. Avoid stretching, heavy lifting, or movements that pull on the wound during the first month of healing.
Start Silicone Therapy Early
Silicone is the best-studied topical treatment for scar prevention. It comes in two forms: adhesive sheets you place over the scar, and gel you apply like a lotion. Both work by hydrating the outer layer of skin and creating a protective barrier that appears to regulate collagen production during the remodeling phase.
For silicone sheets, the recommended wear time is 12 to 23 hours per day, with 24-hour wear considered ideal when practical. You’ll need to keep this up for at least two to three months, and more severe or stubborn scars may benefit from up to six months of use. Silicone gel is a good alternative for areas where a sheet won’t stay put, like the face or over joints. Either option should start once the wound has fully closed and any stitches have been removed.
Protect New Skin From the Sun
Healing skin is extremely sensitive to ultraviolet light. Sun exposure during the first year can cause a scar to darken permanently, turning what might have faded into a barely visible line into a conspicuous brown or purple mark. This is especially true for people with darker skin tones, where post-inflammatory hyperpigmentation is already more likely.
Apply broad-spectrum sunscreen with SPF 30 or higher to any exposed scar, and reapply every two hours when outdoors. Plan on doing this for at least 6 to 12 months, and longer if the scar is still pink, red, or darker than the surrounding skin. Covering the area with clothing or a bandage is even more reliable than sunscreen alone.
Massage the Scar Once It’s Closed
Scar massage helps break up the dense, disorganized collagen that forms during healing and encourages the fibers to align more like normal skin. You can start about two to three weeks after the wound closes completely, once the skin feels solid and there’s no scabbing or open areas. Use firm but comfortable pressure, working in circular motions and perpendicular to the scar line. Aim for at least 10 minutes, twice a day, for six months. You can use any plain lotion or oil to reduce friction. The key is consistency over time, not intensity in any single session.
Skip the Vitamin E
Vitamin E cream is one of the most popular home remedies for scars, but clinical evidence doesn’t support it. A systematic review in the Aesthetic Surgery Journal found no reliable benefit from topical vitamin E for scar appearance, and multiple studies reported adverse reactions including contact dermatitis, itching, and rash. You’re better off sticking with petroleum jelly during the wound-healing phase and switching to silicone once the wound has closed.
Feed Your Body What It Needs to Heal
Collagen, the protein that forms the structural backbone of a scar, requires specific nutrients to build properly. Vitamin C is essential for collagen synthesis. Zinc supports cell division and immune function during repair. Protein provides the amino acids that physically become new tissue. A diet that includes citrus fruits, bell peppers, lean meats, beans, nuts, and seeds will cover these bases for most people. If you’re recovering from surgery or a significant injury and your diet is limited, a supplement containing vitamin C and zinc can help fill the gap.
Know Your Personal Risk Factors
Some people are simply more prone to aggressive scarring regardless of wound care. Keloids, which are raised scars that grow beyond the borders of the original wound, are most common in people with brown or Black skin and in those between the ages of 20 and 30. If you have a personal or family history of keloids, the prevention steps above become even more important, and you may want to discuss additional options with a dermatologist before any planned surgery or piercing.
Location matters too. Wounds on the chest, shoulders, upper back, and earlobes tend to produce thicker scars. Wounds on the eyelids and inner forearms generally heal with minimal scarring. You can’t change where an injury happened, but knowing the risk helps you decide how aggressively to pursue prevention.
When Laser Treatment Can Help
For surgical scars or wounds that are healing with early signs of redness and thickening, laser treatments can make a meaningful difference. Pulsed dye laser, which targets the blood vessels feeding the scar, and low-level laser therapy have both been shown to reduce scar severity. A systematic review found that starting laser treatment within one week of surgery produced roughly twice the improvement compared to starting later. This is a conversation to have with your surgeon or dermatologist before the procedure if possible, so treatment can begin during that early window.