Most scars on the arms can be noticeably reduced with the right combination of time, topical products, and professional treatments. No method completely erases a scar, but many can flatten raised tissue, fade discoloration, and smooth texture enough that scars become far less visible. The approach that works best depends on what type of scar you’re dealing with and how old it is.
Why Your Scar’s Type Matters
A scar is fibrous tissue your body builds to replace damaged skin. But not all scars look or behave the same way, and treatments that work well on one type can be ineffective on another.
Flat, discolored scars are the most common. These sit level with your skin but appear pink, red, brown, or white depending on your skin tone. They’re generally the easiest to treat because the issue is pigment, not structure. Raised scars come in two forms: hypertrophic scars stay within the boundaries of the original wound and often flatten over time on their own, while keloids grow beyond the wound’s edges into thick, rounded clusters of scar tissue that appear red or darker than surrounding skin. Keloids are formed from excess collagen the body produces after a wound heals, and they rarely improve without intervention. Sunken (atrophic) scars sit below the surface of the skin, often left behind by acne or injuries that damaged deeper tissue layers.
Silicone Sheets and Gels
Silicone-based products are the most studied over-the-counter option for raised scars, and they’re typically the first thing dermatologists recommend before considering procedures. They come as adhesive sheets you place directly over the scar or as a gel you apply and let dry into a thin film.
The mechanism isn’t fully understood, but the leading theory is that silicone mimics your skin’s natural barrier, trapping moisture in the scar tissue. This hydration appears to regulate the signals that control collagen production, gradually improving the scar’s texture first, then its color, then its height. In preclinical models, silicone sheeting reduced hypertrophic scar formation by 80 percent. In clinical practice, a survey of plastic surgeons found that 40 percent reported beneficial effects in 50 to 75 percent of their treated patients.
For best results, apply silicone sheets for at least 12 hours a day over a period of two to three months. Arms are a convenient location for this because sheets can be worn under long sleeves. Start once the wound has fully closed and no scabs remain. Silicone gels are a good alternative for areas where sheets won’t stay put, like elbows or wrists.
Other Over-the-Counter Options
Onion extract is the active ingredient in several popular scar gels. A clinical trial found that patches containing onion extract and allantoin improved scar pigmentation, surface relief, and pliability compared to untreated controls, with the strongest improvements seen in older, more mature scars. These products are inexpensive and widely available, though the improvements tend to be more modest than silicone.
Vitamin E is one of the most commonly recommended home remedies for scars, but the evidence is weak. A systematic review found only six qualifying studies: three showed improvement (and two of those used vitamin E combined with other ingredients, not alone), while the other three showed no benefit at all. Two studies also reported side effects including contact dermatitis, itching, and rash. If you want to try it, patch test on a small area first, but don’t expect it to outperform silicone products.
Timing Your Treatment
Scars go through a remodeling phase that lasts nine to twelve months after the wound closes. During this period, your body is actively reorganizing collagen fibers within the scar, which means the scar’s appearance will change on its own. Many scars that look angry and red at six weeks will fade considerably by month nine without any treatment at all.
This doesn’t mean you should wait to start care. Topical treatments like silicone are most effective when started early, during the active remodeling window, because they influence how the collagen reorganizes. But it does mean you should give your scar at least nine to twelve months before judging whether you need professional procedures. That’s also the earliest point at which a surgeon will typically consider a scar revision.
Protect Your Scars From the Sun
New scar tissue is especially vulnerable to UV exposure. While healthy skin has a relatively even distribution of pigment-producing cells, scar tissue does not, which makes it prone to darkening unevenly in the sun. A scar that might have faded to near-invisible can instead turn permanently darker than your surrounding skin if it gets regular sun exposure during the first year.
Cover arm scars with clothing when possible, and apply sunscreen with SPF 30 or higher to any exposed scar tissue before going outside. This is one of the simplest and most effective things you can do, especially for scars that are still pink or red.
Laser Treatments
When topical products aren’t enough, laser resurfacing is one of the most effective professional options. Different laser types target different scar problems. Fractional CO2 lasers work well for sunken and textured scars by creating microscopic channels in the skin that trigger new, more organized collagen growth. Pulsed dye lasers target redness and are effective for both atrophic and hypertrophic scars. Patients who underwent fractional CO2 laser treatment reported meaningful improvements in scar color, thickness, pliability, and surface texture, along with reductions in itching and pain.
Most people need multiple sessions spaced several weeks apart. The treatment itself feels like a series of quick, hot pinpricks, and treated skin will be red and sensitive for several days to a week afterward. Arms heal relatively well after laser treatments compared to areas like the chest, where scarring from the laser itself can occasionally be an issue.
Steroid Injections for Raised Scars
If you have a hypertrophic scar or keloid on your arm that hasn’t responded to silicone or compression, corticosteroid injections can soften and shrink the tissue. A doctor injects a steroid solution directly into the scar, which breaks down excess collagen and reduces inflammation. You’ll typically receive two or three injections spaced about a month apart, though treatment for stubborn keloids can continue for six months or longer.
These injections can sting, and the scar may temporarily look worse (more indented or lighter in color) before it improves. For keloids that have been surgically removed, follow-up steroid injections starting immediately after excision and continuing weekly for several weeks, then monthly for several months, help prevent the keloid from growing back.
What to Realistically Expect
The goal with scar treatment is significant improvement, not perfection. A combination approach almost always outperforms any single method. A practical routine for arm scars looks like this: start silicone sheets or gel as soon as the wound fully closes, apply sunscreen daily to exposed scars, give the scar nine to twelve months to mature, then reassess. If the scar is still raised, discolored, or textured beyond what you’re comfortable with, that’s the point to explore laser treatments or injections with a dermatologist.
Older scars that have been stable for years can still be improved, particularly with laser resurfacing, but they generally respond more slowly than newer ones. Darker skin tones carry a higher risk of pigmentation changes from laser treatments and a higher tendency to form keloids, so finding a provider experienced with your skin type matters.