Keeping a cut from scarring comes down to how you treat it in the first few days and the weeks that follow. Every cut that goes deeper than the top layer of skin will leave some mark, but the right care can make that mark significantly smaller, flatter, and less visible. The key principles are simple: keep the wound moist, protect it from the sun, and start scar prevention early.
Keep the Wound Moist From the Start
The single most important thing you can do is never let a cut dry out and form a thick scab. Wounds that stay properly moisturized grow new tissue up to 50% faster than wounds left to air dry. That speed matters because the longer a wound stays open, the more opportunity your body has to lay down excess collagen, which is what creates a visible scar.
A moist environment also produces smoother, flatter scar tissue. When a wound dries out, the thick, irregular scab that forms forces new skin to grow unevenly underneath it. Moisture allows tissue to form in a controlled, even layer across the wound surface.
The easiest way to do this: after cleaning the cut with cool water, apply a thin layer of plain petroleum jelly and cover it with a bandage. Change the bandage daily or whenever it gets wet or dirty, and reapply the petroleum jelly each time. A study of more than 1,200 surgical wounds found that plain petroleum jelly worked just as well as antibiotic ointment for preventing infection, without the added cost or risk of an allergic reaction. About 1% of patients using antibiotic ointment developed contact dermatitis, while none in the petroleum jelly group did.
Skip Vitamin E
Vitamin E oil is one of the most popular home remedies for scars, but the evidence doesn’t support it. A systematic review of clinical studies found that only three out of six trials showed any benefit from topical vitamin E, and the other three showed no improvement in scar appearance at all. Worse, one study documented contact dermatitis (red, itchy, inflamed skin) in up to 33% of patients who applied it. You’re better off sticking with petroleum jelly during the healing phase and silicone products afterward.
Know Which Cuts Need Professional Closure
Some cuts will scar badly no matter what you do at home because the edges aren’t held together tightly enough. Getting stitches or skin adhesive from a doctor makes a real difference for certain wounds. Consider professional treatment if your cut is:
- Deeper than about 6 mm (a quarter inch), especially if you can see fat, muscle, or bone
- Longer than 19 mm (three-quarters of an inch) with significant depth
- Gaping open or unable to hold its edges together on its own
- Located on your face, lips, or eyelids, where cosmetic outcome matters most
- Over a joint, particularly if it opens wider when you move
- On your hands or fingers, where deep cuts can affect tendons and nerves
The sooner you get these wounds closed, the better. Waiting too long can mean the wound edges are no longer viable for stitching, which leads to a wider, more noticeable scar.
Transition to Silicone After the Wound Closes
Once the cut is fully closed and any scab has fallen off naturally (typically around four weeks for surgical wounds), you can start active scar treatment. Silicone gel sheets are the most well-studied option. In animal models, silicone sheeting reduced raised scar formation by 80%. Among plastic surgeons who use silicone products, 40% reported beneficial results in 50 to 75% of their patients.
Silicone works by mimicking the skin’s natural barrier. It reduces water loss through the scar surface, which keeps the new tissue hydrated and appears to regulate the signals that control how collagen is laid down. Over time, silicone sheets improve the texture of a scar first, then its color, then its height. Both adhesive silicone sheets and silicone gel that you apply like a cream are available over the counter. Sheets work well on flat body surfaces, while gel may be easier for areas that move a lot or are hard to bandage.
Protect the Scar From the Sun
New scars are highly vulnerable to UV damage. Sun exposure can permanently darken a healing scar, creating a discolored mark that’s much more visible than it would otherwise be. You need to keep a new scar protected from the sun for six months to a full year, until it matures into its final color (usually pale or skin-toned).
Cover the scar with clothing when possible. When it’s exposed, apply a broad-spectrum sunscreen with SPF 30 or higher every time you go outside. This isn’t optional during the healing window. Even brief, incidental sun exposure on an errand or a drive can trigger hyperpigmentation in a fresh scar.
Massage the Scar Regularly
Once the wound is fully closed and no longer tender to the touch, gentle massage can help break down the dense collagen fibers that make scars feel stiff, raised, or tight. For best results, massage for at least 10 minutes, twice a day, for six months.
Two techniques are most effective. Circular motions over the scar break down fibrous tissue and help the underlying structures align more normally. Cross-friction motions, where you rub perpendicular to the scar line, break up adhesions where the scar has attached to deeper tissue. Use a moisturizer or silicone gel as lubrication so you’re not pulling on the skin. The goal is firm, steady pressure, not pain.
Who Scars More Easily
Some people are simply more prone to raised, thickened scars (called hypertrophic scars or keloids) regardless of how well they care for a wound. Your risk is higher if you have brown or Black skin, if you’re between 20 and 30, or if you have a personal or family history of keloids. If you’ve ever had a keloid from a previous injury, you’re at elevated risk of developing another one.
People in these higher-risk groups benefit even more from the steps above, particularly silicone therapy and sun protection. If you know you scar aggressively, starting silicone products as soon as the wound is sealed can make a meaningful difference in the final result.