Most bruises heal completely within about two weeks. A minor bump might fade in 10 days, while a deeper or more forceful injury can linger for three weeks or longer. The timeline depends on factors like your age, where the bruise is located, and whether you take certain medications.
The Color Stages of a Healing Bruise
A bruise changes color as your body breaks down the blood that leaked from damaged blood vessels into the surrounding tissue. These color shifts are a reliable way to gauge where you are in the healing process.
When you first get hit, the bruise appears pinkish or red as blood pools under the skin. Within a day or two, it darkens to a deep blue or purple. Over the next several days, it fades through violet and green as your immune cells digest the leaked blood and convert it into different waste pigments. The green stage gives way to dark yellow and eventually a pale yellow before the bruise disappears entirely.
What’s actually happening at each stage: your immune cells swarm the area and begin dismantling the hemoglobin from the trapped red blood cells. Hemoglobin first breaks down into a green pigment, then a yellow one. Iron left over from the process gets stored as a brownish compound, which is why some bruises develop a muddy brown tint before they fully resolve. If your bruise is progressing through these colors on schedule, it’s healing normally.
Bruises vs. Hematomas
A standard bruise is flat, tender, and sits close to the skin’s surface. It typically heals on its own within one to two weeks. A hematoma is a different story. Hematomas involve a larger collection of blood, often deeper in the tissue, and they can form a raised, firm lump under the skin. Healing time for a hematoma ranges from weeks to months depending on its size and location. If your bruise feels like a hard knot or keeps growing after the initial injury, you may be dealing with a hematoma rather than a simple bruise.
Why Some Bruises Take Longer
Age is one of the biggest factors. As you get older, your skin thins and loses the protective fatty layer that normally cushions blood vessels from impact. That means less force is needed to cause a bruise, and the resulting bruise tends to be larger. Healing also slows with age because communication between skin cells and immune cells becomes less efficient. Research comparing young and older skin cells found that in older tissue, the cells responsible for repair migrated much more slowly to the injury site, adding days to the healing process.
Medications play a significant role too. Aspirin, blood thinners, anti-platelet drugs, and even some antibiotics and antidepressants can reduce your blood’s ability to clot, which means more blood leaks out after an injury and the bruise takes longer to clear. Corticosteroids thin the skin itself, making bruises easier to get and slower to fade. Certain supplements like ginkgo biloba have a similar blood-thinning effect.
Location matters as well. Bruises on your legs, where blood has to work against gravity to drain, often heal more slowly than bruises on your arms or torso.
What Helps (and What Doesn’t)
In the first several hours after an injury, applying ice with a cloth barrier for 10 to 20 minutes at a time can help control bleeding under the skin and reduce pain. Stick to the first eight hours, and don’t ice continuously. Elevating the bruised area above heart level helps drain swelling and slows blood flow to the site.
Beyond those first hours, though, the evidence gets murkier. Some researchers have questioned whether aggressively reducing inflammation actually delays recovery, since inflammation is part of how your body cleans up damaged tissue. The general consensus is that brief icing and elevation early on won’t hurt and may limit the bruise’s size, but overdoing it could slow things down.
Arnica, a popular herbal remedy sold as creams and gels, has mixed evidence. Several reviews found it had a small effect on reducing bruise discoloration after surgical procedures, particularly facial surgeries. But the American Academy of Ophthalmology reviewed the evidence and did not support its use for bruises following eye-area surgeries. If you want to try arnica, it’s unlikely to cause harm, but don’t expect dramatic results.
When a Bruise Signals Something Else
A bruise that hasn’t improved within three weeks deserves attention from a healthcare provider. The same goes for bruises that appear frequently without an obvious cause, keep showing up in the same spot, or are accompanied by fevers, swollen lymph nodes, night sweats, or unexplained weight loss.
Large, painful bruises after minor contact could indicate a broken bone underneath or internal bleeding. Tiny, pinpoint-sized spots (called petechiae) that look like a rash of small bruises have their own set of causes, ranging from infections to low platelet counts. Easy bruising can sometimes be a symptom of a blood-clotting disorder or blood disease, so if it’s a new pattern for you and you can’t explain it, it’s worth bringing up at your next appointment.