Keeping a wound moist, protecting it from the sun, and supporting your body’s repair process with the right nutrients are the most effective ways to speed up scar healing. In animal models, wounds kept in a moist environment healed twice as fast as those left to dry out, and that principle underpins most modern scar care. But “healing faster” also means healing better, with less visible scarring, and that requires understanding what your skin is actually doing during the months-long repair process.
How Your Skin Rebuilds After a Wound
Wound healing happens in three overlapping phases. First, inflammation kicks in within minutes: your body stops the bleeding, clears debris, and sends immune cells to fight infection. Next comes the proliferative phase, where new tissue fills the wound and fresh skin grows over the surface. Finally, the remodeling phase begins around week three. This is where scar tissue matures, and it can last up to 12 months.
During remodeling, your body reorganizes collagen fibers to strengthen the repair site. The scar gradually softens, flattens, and fades. Anything you do to support this process, especially in the first several months, has the biggest impact on how your scar ultimately looks and feels.
Keep the Wound Moist
The single most impactful thing you can do is maintain a moist healing environment. Letting a wound “air out” or form a thick scab actually slows things down. When skin cells have to burrow under a dry crust to reach each other, the whole process takes longer and often produces a more noticeable scar. A moist environment lets new skin cells migrate across the wound surface freely, roughly doubling the speed of that resurfacing process compared to dry conditions.
In practice, this means applying a thin layer of petroleum jelly (or a similar occlusive ointment) and covering the wound with a bandage. Change the dressing daily or when it gets dirty. Once the wound has fully closed and there’s no open skin, you can transition to other topical treatments.
Silicone Products Are the Gold Standard
Medical-grade silicone, available as adhesive sheets or topical gel, is the most well-supported over-the-counter treatment for scar improvement. Clinical data shows silicone can reduce scar texture irregularity by 86%, improve color by 84%, and decrease scar height by 68%. It works by trapping moisture against the scar, regulating collagen production, and reducing the tension that can cause scars to thicken.
Silicone sheets are worn directly over the scar for 12 or more hours a day. Gel formulations are easier to use on visible areas like the face or hands. Either format is effective. For the best results, start using silicone once the wound is fully closed (no scabs, no open areas) and continue for at least 8 to 12 weeks.
Onion Extract Gels Offer a Comparable Option
Gels combining onion extract, aloe vera, and silicone are widely available and marketed for scar treatment. A clinical trial comparing this combination against silicone sheets alone found no significant difference in scar appearance, color, thickness, or patient satisfaction after 12 weeks. Both groups saw meaningful reductions in pain and itching. The onion extract group did show slightly better scar pliability (softness) at the study’s end, which may matter for scars over joints or areas that need to move freely. Neither treatment caused adverse effects.
If you find silicone sheets uncomfortable or impractical, a gel containing onion extract and silicone is a reasonable alternative.
Skip the Vitamin E
Vitamin E cream is one of the most commonly recommended home remedies for scars, but clinical evidence does not support it. One study of 159 patients recovering from burn surgery found topical vitamin E had no appreciable effect on scarring after four months. Worse, nearly a third of those patients developed skin reactions to the cream, including contact dermatitis and eczema-like irritation. Some researchers have concluded that vitamin E can actually worsen the appearance of scars. Save your money and use silicone or petroleum jelly instead.
Nutrition That Supports Skin Repair
Your body needs specific raw materials to build collagen and close wounds efficiently. Two nutrients stand out. Vitamin C is an essential cofactor for collagen synthesis. Without enough of it, your body simply cannot produce the structural protein that holds a scar together. It also supports the growth of new blood vessels that supply healing tissue with oxygen. Zinc plays a complementary role, aiding collagen production, stabilizing cell membranes, and supporting blood clot formation in early wound healing.
You don’t necessarily need supplements if your diet is adequate. Citrus fruits, bell peppers, and broccoli are rich in vitamin C. Meat, shellfish, legumes, and seeds provide zinc. If you’re recovering from surgery or a significant injury, your body’s demand for both nutrients increases, and a short-term supplement may help fill the gap.
Protect Your Scar From the Sun
New scar tissue is especially vulnerable to ultraviolet light. UV exposure stimulates excess pigment production in healing skin, leading to dark discoloration that can become permanent. Animal research confirms that UV radiation after wounding increases both the degree of fibrosis (thickening) and hyperpigmentation, producing a noticeably worse cosmetic result.
Cover your scar with clothing or a bandage whenever possible, and apply a broad-spectrum sunscreen with SPF 30 or higher to any exposed scar tissue. Continue this for at least 12 months, the full duration of the remodeling phase. Scars that stay pink or red are still actively maturing and remain photosensitive.
Massage the Scar Regularly
Scar massage is a simple technique that helps break up the dense collagen bundles that make scars feel stiff and raised. Hand therapists typically recommend starting massage within one week after stitches are removed, rather than waiting until a scar becomes visibly problematic. The standard recommendation is three to five times per day, for three to five minutes each session, continuing for about 12 weeks after surgery or injury.
Use firm, circular pressure directly on the scar with a moisturizer or silicone gel. You should feel the tissue moving under your fingers, not just the skin sliding over the surface. Over time, this improves pliability, reduces tightness, and can help flatten raised scars. It also desensitizes the area if your scar is tender or itchy.
Professional Treatments for Stubborn Scars
When home care isn’t enough, two in-office procedures have strong evidence for improving established scars. Fractional CO2 laser therapy creates microscopic channels in scar tissue, triggering the body to replace disorganized collagen with healthier tissue. In a split-face study on acne scars, the laser side improved by about 33% on clinical grading and nearly 50% on patient satisfaction scores. The trade-off is a healing period averaging 7 to 8 days, with some risk of temporary darkening in deeper skin tones.
Microneedling uses fine needles to achieve a similar collagen-remodeling effect. It produced more modest improvements in the same study (about 9% on clinical grading, 20% on patient satisfaction), but recovery averaged under 4 days with less risk of pigmentation changes. For people with darker skin or limited downtime, microneedling may be the better starting point. Many dermatologists recommend a series of three to six sessions spaced four to six weeks apart for either treatment.
Putting It All Together
The timeline matters. In the first days after injury, your priority is keeping the wound clean and moist. Once the surface is fully closed, transition to silicone gel or sheets, begin gentle massage after any stitches come out, and protect the area from sun exposure. Maintain this routine consistently for at least three months. Eat enough protein, vitamin C, and zinc to give your body what it needs. If the scar remains raised, discolored, or bothersome after six to twelve months of home care, that’s the point where professional treatments like laser therapy or microneedling can make a meaningful difference.