Boil Ease is an over-the-counter pain-relieving ointment designed to numb the skin around a boil. Its active ingredient is benzocaine at 20%, a topical anesthetic that temporarily blocks pain signals from nerve endings in the affected area. It does not treat the infection causing the boil or speed up healing. Its sole job is to make the boil hurt less while your body works through the infection on its own.
How Benzocaine Numbs the Pain
Benzocaine works by stopping nerve cells in the skin from firing pain signals. Normally, when tissue is inflamed (as it is around a boil), nerve endings send electrical impulses to your brain by rapidly moving sodium into nerve cells. Benzocaine blocks the tiny channels that let sodium in. Without that sodium flow, the nerve can’t generate a pain signal, so you feel temporary numbness at the application site.
This effect is local, meaning it only works where you apply the ointment. It doesn’t enter your bloodstream in meaningful amounts under normal use, and it doesn’t affect pain or sensation anywhere else in your body. The numbness typically sets in within a few minutes and wears off over time, which is why reapplication is needed throughout the day.
What Boil Ease Does Not Do
Boil Ease contains no antibiotics and no ingredients that draw pus to the surface. It will not shrink the boil, fight the bacteria inside it, or make it drain faster. A boil is a pocket of infection, usually caused by staph bacteria, that your immune system needs to wall off and push out. In most healthy people, a small boil will form a white tip and drain on its own within five to seven days.
The most effective home treatment for actually resolving a boil is moist heat: a warm, wet washcloth applied for 20 to 30 minutes, three or four times a day. This increases blood flow to the area, helps the boil come to a head, and encourages drainage. Boil Ease can be used alongside warm compresses to manage pain during this process, but it’s the heat doing the real work.
How to Use It
You apply Boil Ease directly to the skin over and around the boil. A thin layer is enough. The product is meant for external use on intact skin. If your boil has already ruptured and is actively draining, applying benzocaine to open or broken skin increases the risk of absorption and irritation.
Keep the treated area clean between applications. Washing your hands before and after touching the boil helps prevent spreading the infection to other parts of your body or to other people. Covering the boil with a loose bandage after applying the ointment can protect your clothing and reduce the chance of spreading bacteria.
Safety Concerns With Benzocaine
Benzocaine at the 20% concentration found in Boil Ease is generally well tolerated on skin, but it carries one serious risk worth knowing about. The FDA has issued warnings that benzocaine can cause a condition called methemoglobinemia, in which your red blood cells lose their ability to carry oxygen effectively. This is rare but life-threatening.
Symptoms of methemoglobinemia include pale, gray, or bluish-colored skin (especially around the lips and fingernails), shortness of breath, fatigue, confusion, and a rapid heartbeat. These can appear within minutes to hours of applying the product. If you notice any of these signs, stop using the ointment and seek emergency medical care.
The FDA specifically warns that benzocaine products should not be used on children younger than 2 years old. For adults and older children, the risk is low with normal topical use on small areas of skin, but it increases if you apply the product to large areas, use it more often than directed, or apply it to broken skin where more benzocaine can be absorbed.
When a Boil Needs More Than OTC Relief
Most single, small boils resolve with warm compresses and time. But some situations call for medical attention rather than just pain management at home. According to the Mayo Clinic, you should see a doctor if a boil:
- Occurs on your face or near your eyes
- Worsens rapidly or becomes extremely painful
- Causes a fever, which suggests the infection may be spreading
- Keeps growing despite several days of home care
- Hasn’t healed in two weeks
- Keeps coming back
Red streaks spreading outward from the boil are another warning sign. This can indicate the infection is moving into surrounding tissue or the bloodstream, which requires antibiotics or, in some cases, a doctor draining the boil with a sterile instrument. Squeezing or cutting a boil yourself pushes bacteria deeper into the tissue and increases the risk of complications.