Keloids are notoriously difficult to remove, and no single treatment eliminates them permanently in every case. The most effective approaches combine two or more therapies, such as surgical excision followed by radiation or steroid injections paired with silicone sheeting. Surgery alone carries a recurrence rate of 50% to 80%, which is why dermatologists and plastic surgeons almost always recommend combination strategies.
First, Make Sure It’s Actually a Keloid
The distinction matters because treatment intensity differs. A keloid extends beyond the borders of the original wound or injury site and does not shrink on its own over time. If the raised scar stays within the boundaries of the original wound, it’s a hypertrophic scar, which is more likely to flatten gradually and responds better to conservative treatment. Keloids can keep growing for months or years, spreading into skin that was never injured. They’re most common on the earlobes, chest, shoulders, and upper back.
Steroid Injections
Injecting a corticosteroid directly into the keloid is the most common first-line treatment. The steroid softens the dense collagen that makes keloids firm and raised, gradually flattening the scar over a series of sessions. Concentrations typically range from 10 to 40 mg/mL, with higher doses used for thicker keloids on the trunk or extremities. Most protocols call for injections every 3 to 4 weeks, with anywhere from 3 to 8 sessions depending on how the keloid responds.
The injections can be painful because keloid tissue is dense and resists the needle. Some providers numb the area first with a local anesthetic. You’ll usually notice the keloid getting softer and flatter after the second or third session. Side effects can include thinning of the surrounding skin and lightening of skin color at the injection site, particularly in darker skin tones. These changes are generally reversible once treatment stops.
Surgical Excision
Cutting out a keloid is the fastest way to physically remove it, but it creates a new wound, and keloids form precisely because of abnormal wound healing. Recurrence rates after surgery alone range from 45% to 100% depending on the study and the keloid’s location. That statistic sounds discouraging, but surgery becomes far more effective when paired with a follow-up treatment.
Adding radiation therapy after excision drops the recurrence rate dramatically, to under 10% in many cases when the radiation dose is high enough. Steroid injections started shortly after surgery also reduce recurrence, though not as effectively as radiation. Some surgeons begin steroid injections at the time of wound closure and continue them monthly for several months. The goal is to suppress the overactive healing response before it can rebuild the keloid.
Radiation After Surgery
Radiation is the most effective add-on therapy following surgical removal. It works by damaging the rapidly dividing cells that produce excess collagen. Treatment ideally starts the same day as surgery or the following day. The total dose typically ranges from 12 to 20 Gy, delivered across one to three sessions over about a week. Newer protocols using higher single-session doses have shown better long-term control.
The radiation is superficial, meaning it targets only the top layers of skin and doesn’t penetrate deeply into the body. Still, the idea of radiation understandably gives people pause. The risk of radiation-induced cancer from these low doses is considered extremely small, but providers generally avoid using it in children and over the thyroid or breast tissue. For stubborn or recurrent keloids, particularly on the earlobes or chest, it remains one of the most reliable options available.
Cryotherapy
Freezing keloid tissue destroys cells and disrupts blood supply, causing the scar to shrink. There are two approaches: contact cryotherapy, where liquid nitrogen is applied to the surface, and intralesional cryotherapy, where a needle delivers the freezing agent inside the keloid. The internal method performs significantly better. In one clinical comparison, intralesional cryotherapy achieved an excellent response in 87% of cases versus 60% for the surface method. The internal technique also flattened keloids faster, with most patients seeing major improvement after just one or two sessions, and it caused fewer side effects like skin discoloration.
Cryotherapy can lighten the treated skin permanently, which makes it a less appealing option for people with darker skin tones. It works best on small to medium keloids.
Chemotherapy-Based Injections
For keloids that don’t respond well to steroids, providers sometimes inject medications originally developed for cancer treatment. These drugs work by blocking the rapid cell growth that drives keloid formation. One commonly used agent, when injected directly into the keloid, has shown results comparable to steroids in reducing scar size and thickness over about 10 weeks. The main downside is pain at the injection site, which can linger for several days. Adding a steroid injection immediately afterward significantly reduces this post-treatment soreness.
Another option involves a chemotherapy drug that disrupts the connective tissue within the keloid. Early results suggest it may be more effective than steroids alone, particularly for dense, mature keloids. These treatments are typically reserved for keloids that haven’t responded to standard steroid injections.
Laser Treatment
Pulsed dye lasers target the blood vessels feeding the keloid, which helps reduce redness and may contribute to flattening over time. Laser treatment generally improves the overall appearance of keloid scars, though when individual scar characteristics like height and firmness are measured separately, the results are comparable to conventional treatments. Lasers work best as part of a combination approach rather than a standalone solution. Multiple sessions are needed, usually spaced several weeks apart.
Silicone Sheets and Gels
Silicone sheeting is one of the few things you can do at home to manage a keloid or prevent one from worsening after treatment. The sheets create a sealed, hydrated environment over the scar that appears to regulate collagen production. For best results, wear the sheet for at least 4 hours per day, though longer is better. Plan to continue for a minimum of 3 months, and extending use to 6 months helps prevent recurrence of a scar that has already responded well to other treatment.
Silicone sheets are available over the counter at most pharmacies. They’re thin, reusable, and can be worn under clothing. Silicone gels that dry into a thin film are an alternative for keloids in locations where a sheet won’t stay in place, like the jawline or behind the ear. Neither option will flatten a large, established keloid on its own, but both are valuable for maintaining results after more aggressive treatment.
Pressure Therapy
Sustained pressure on a healing wound can help prevent keloid formation or suppress regrowth after removal. Custom pressure garments or clip-on earrings (for earlobe keloids) need to deliver between 15 and 40 mmHg of pressure to be effective. Pressures above 40 mmHg risk damaging the skin. The garments must be worn consistently, often for months, which makes compliance the biggest challenge. Pressure therapy is most commonly used after surgical excision of ear keloids, where a simple pressure earring can be worn day and night during healing.
Choosing a Treatment Strategy
The best approach depends on the keloid’s size, location, and how long it has been growing. Small, newer keloids on the earlobes often respond well to steroid injections alone or combined with silicone sheeting. Larger keloids on the chest or shoulders typically need surgical excision followed by radiation or a series of steroid injections to prevent recurrence. Keloids that have already come back after surgery are strong candidates for excision plus radiation, since that combination offers the lowest recurrence rates documented in clinical studies.
Most people need multiple treatments over several months. Even with the best combination therapy, some keloids do return, and a second round of treatment may be necessary. Starting with the least invasive effective option and escalating if needed is the general approach most specialists take.