Most bruises heal completely within about two weeks. The exact timeline depends on factors like your age, where the bruise is, how hard the impact was, and whether you take certain medications. During those two weeks, a bruise cycles through a predictable series of color changes as your body breaks down and reabsorbs the trapped blood beneath your skin.
The Color Stages of a Healing Bruise
A bruise starts as a pinkish or red mark, reflecting fresh blood pooling under the skin from tiny broken blood vessels. Within a day or two, the area darkens to deep blue or purple as the blood loses oxygen. Over the following days, your body begins breaking down the blood pigments trapped in the tissue, producing a cascade of color shifts: from purple to violet, then greenish, then dark yellow, and finally a pale yellow before fading entirely.
These color changes aren’t random. They’re driven by the chemical breakdown of hemoglobin, the oxygen-carrying molecule in red blood cells. As your body processes hemoglobin, it converts into a series of pigments, each with its own color. The green tones come from one stage of breakdown, while the yellow tones come from a later stage. When the yellow finally fades, the cleanup is essentially done.
A rough day-by-day guide looks like this:
- Days 1 to 2: Pink, red, or dark red
- Days 2 to 5: Blue or dark purple
- Days 5 to 10: Green or greenish-brown
- Days 10 to 14: Yellow to pale yellow, then gone
These stages can overlap, and larger bruises often show multiple colors at once as different areas heal at different rates. A bruise on your shin, where there’s less soft tissue padding, may look more dramatic than one on your thigh, even from a similar impact.
Why Some Bruises Take Longer
Two weeks is the average, but several factors push that timeline longer. Age is one of the biggest. As you get older, your skin becomes thinner and loses some of its protective fatty layer, which means blood vessels break more easily and bruises tend to be larger. Research at Rockefeller University found that in older skin, the cells responsible for repair migrate much more slowly to the injury site, often adding days to the healing process. This slowdown is partly caused by disrupted communication between skin cells and immune cells, a signaling breakdown that worsens with age.
Medications also matter. Blood thinners like warfarin, aspirin, and similar drugs work by slowing your blood’s ability to clot. That means when tiny vessels break under the skin, they leak for longer before sealing off. The result is bruises that form more easily, spread wider, and can take noticeably longer to clear. The bruises themselves look the same as any other bruise. They just tend to be more severe.
Location plays a role too. Bruises on your lower legs and forearms, where skin is thinner and blood flow is farther from the heart, often linger longer than bruises on well-padded areas like the upper arms or buttocks. A deep bruise from a hard impact will also outlast a superficial one, simply because there’s more trapped blood for your body to process.
Bone Bruises Are a Different Category
A bone bruise is not the same as a regular bruise on your skin. It involves damage to the tissue inside the bone itself, usually from a hard fall, collision, or joint twist. The pain is typically more severe and much longer lasting. While a standard soft tissue bruise clears in about two weeks, bone bruises take one to two months to heal, and larger ones can take even longer.
You can’t see a bone bruise on the surface the way you see a skin bruise. It’s usually diagnosed with imaging after persistent deep pain that doesn’t improve on the expected timeline. If you had a significant impact and the area still hurts weeks later, that’s worth having evaluated.
Can You Speed Up Healing?
The basics work: ice the area in the first 24 to 48 hours to limit swelling and blood leakage, keep the bruised area elevated when you can, and avoid re-injuring it. After the first couple of days, gentle warmth can help increase blood flow to the area and support your body’s cleanup process.
Arnica, a plant-based topical treatment widely marketed for bruises, has mixed evidence behind it. A 2014 review found no support for arnica’s effectiveness at the concentrations typically sold over the counter (below 10%). A separate study testing arnica capsules after nasal surgery found no benefit for bruising specifically, though it did help with swelling in the early recovery period. It’s unlikely to cause harm as a topical gel, but it’s also unlikely to meaningfully shorten a bruise’s lifespan.
When a Bruise Signals Something Else
A bruise that hasn’t healed within two weeks is worth paying attention to. The same goes for frequent or unexplained bruising, especially if you don’t recall any injury that caused it. These patterns can sometimes point to underlying issues with how your blood clots or how your blood vessels function.
Bruising paired with other symptoms raises more concern. Watch for muscle weakness, tingling or numbness near the bruised area, or noticeable color changes in the surrounding skin that suggest circulation problems. A bruise that keeps growing rather than fading, feels unusually firm or hard, or causes increasing pain rather than decreasing pain over time may indicate a hematoma, a larger collection of blood that sometimes needs medical attention.
Certain symptoms after a head injury require emergency care: a sudden severe headache, weakness on one side of your body, trouble speaking, vision changes, or loss of consciousness. These can signal bleeding inside the skull, which is a medical emergency regardless of what the outside of your head looks like.