The best thing to put on a cold sore depends on your goal: fighting the virus, easing pain, or protecting the sore while it heals. Most cold sores clear up on their own in 7 to 10 days, but the right topical treatment, started early, can shave days off that timeline and make the process far less miserable.
Start Treatment at the First Tingle
Whatever you choose to apply, timing matters more than almost anything else. Antivirals are most effective when started within 48 hours of the cold sore forming, ideally as soon as you feel that familiar tingling, itching, or burning sensation before a blister even appears. This early window, called the prodrome stage, is when topical treatments have the best chance of limiting how large and painful the sore becomes. Once a blister has fully formed and broken open, treatments still help with healing and comfort, but you’ve lost the opportunity to stop it in its tracks.
Over-the-Counter Antiviral Cream
Docosanol 10% cream (sold as Abreva) is the only FDA-approved over-the-counter antiviral for cold sores. It works by blocking the virus from entering healthy skin cells, which slows the outbreak’s spread. You apply it directly to the sore and surrounding skin five times a day until the sore has healed. It won’t cure the underlying virus, but it can reduce pain, discomfort, and healing time, especially when you start using it during the tingle stage.
Prescription Topical Antivirals
If you get frequent or severe cold sores, a prescription cream may be worth asking about. Penciclovir 1% cream is applied every two hours while awake, and clinical trials found it shortened the average outbreak by about half a day compared to no treatment (roughly 4.5 days versus 5 days for the sore to fully heal). That may not sound dramatic, but for people dealing with painful, visible sores, even a modest reduction matters. Prescription acyclovir cream is another option that works through a similar mechanism, interfering with the virus’s ability to copy itself inside your cells. Your doctor can also prescribe oral antiviral pills, which tend to be more effective than creams for people with frequent outbreaks.
Pain-Relieving Creams and Gels
Cold sores hurt, and antiviral creams don’t do much for pain on their own. That’s where topical numbing agents come in. Products containing 20% benzocaine (like Orajel Cold Sore) temporarily numb the area and can be applied three to four times daily. Don’t use them for more than seven consecutive days. Lidocaine-based gels work similarly. These products don’t fight the virus or speed healing. They just make the sore less painful while you wait it out, and you can layer them with an antiviral cream as long as you apply the antiviral first and let it absorb.
Cold Sore Patches
Hydrocolloid patches are thin, nearly invisible adhesive bandages designed to sit over a cold sore. The gel technology inside the patch absorbs fluid from the sore while maintaining the moist environment that skin needs to repair itself. Patches have also been shown to prevent scab formation, which can reduce pain, speed healing, and lower the risk of scarring. Beyond the healing benefits, patches serve a practical purpose: they create a physical barrier that helps prevent you from touching the sore and spreading the virus to other areas of your face or to other people. Many people prefer patches simply because they conceal the sore and allow makeup to be applied over the top.
Zinc Products
Zinc-based topical products are a lesser-known but promising option. Zinc salts irreversibly inhibit herpes virus replication in lab studies, and clinical trials have shown that zinc solutions applied to herpetic lesions decrease the amount of active virus while improving healing rates. You can find zinc oxide creams at most pharmacies, and specialized zinc swabs formulated for cold sores are also available. Zinc won’t replace an antiviral, but it can complement one, and some people use it as a standalone treatment for mild outbreaks.
Honey and Propolis
If you prefer something more natural, medical-grade honey and propolis (a resin-like substance bees produce) both have real evidence behind them. A systematic review and meta-analysis found that honey led to complete healing of herpetic lesions in an average of 8 days, compared to 9 days for acyclovir. Propolis performed even better, showing healing properties statistically superior to acyclovir across the studies analyzed. Regular grocery-store honey isn’t the same as the medical-grade or raw honey used in these studies, so look for manuka honey or similar high-quality varieties. Apply a small amount directly to the sore several times a day and cover with a bandage if needed.
Tea Tree Oil
Tea tree oil has antiviral and anti-inflammatory properties, and a 2009 study found it showed potential antiviral activity against HSV in lab samples. The evidence is preliminary, though, and it hasn’t been proven effective in human trials. If you want to try it, never apply tea tree oil undiluted. Mix 3 to 5 drops into 1 ounce of a carrier oil like coconut, jojoba, or sweet almond oil, and dab a small amount onto the sore with a clean cotton swab. It may help reduce inflammation and discomfort even if the antiviral benefit is uncertain.
What Not to Put on a Cold Sore
Avoid steroid or corticosteroid creams (like hydrocortisone) on an active cold sore. Steroids suppress your local immune response, which is exactly what the virus needs to multiply. Without an immune system keeping it in check, the virus can proliferate and the outbreak can worsen or spread. This applies to prescription steroid creams, over-the-counter cortisone, and combination products that contain steroids alongside other ingredients.
Also skip rubbing alcohol and hydrogen peroxide. While they’re commonly reached for as “disinfectants,” they damage healthy skin tissue around the sore, delay healing, and increase the chance of scarring. Picking at scabs or popping blisters has the same effect, and it spreads the virus to your fingers and anything you touch afterward.
Layering Treatments for Best Results
You don’t have to pick just one product. A practical approach for a painful outbreak looks like this: apply an antiviral cream (docosanol or a prescription option) at the first sign of tingling. Use it consistently throughout the day as directed. Between antiviral applications, dab on a pain-relieving gel if the sore is making it hard to eat, drink, or talk. Once the sore has blistered and is weeping, switch to a hydrocolloid patch to protect it, keep the area moist, and reduce the chance of a crusty scab. Keep your hands clean and avoid touching the sore directly with your fingers whenever possible. Use a clean cotton swab for each application to prevent recontamination.
Ice wrapped in a cloth and held against the sore for a few minutes can also help with swelling and pain in the early stages, before you’ve had a chance to get to a pharmacy. It won’t affect the virus, but it provides immediate, no-cost relief.