Most bruises heal completely within about two weeks. Smaller bruises from a minor bump may fade in under a week, while deeper or larger ones can linger for a month or more. The timeline depends on the size of the bruise, where it is on your body, and your overall health.
What Happens Under the Skin
A bruise forms when an impact ruptures tiny blood vessels beneath the skin, letting blood pool in the surrounding tissue. Your body then sends specialized immune cells to the site to clean up the spilled blood, breaking down hemoglobin (the oxygen-carrying protein in red blood cells) into a series of pigments. This cleanup process is what produces the color changes you see on the surface.
First, the trapped blood appears red or dark purple. Over the next few days, the hemoglobin is converted into a green pigment, which is why bruises often take on a greenish tint around days three through five. That green pigment is then further broken down into a yellow one, giving bruises their characteristic yellowish-brown look in the final days before fading. The iron left over from the hemoglobin gets stored as a brownish pigment, which is why some bruises have a muddy brown stage before they disappear entirely.
Typical Healing Timeline
For a healthy adult with a standard bruise, expect roughly this progression:
- Days 1 to 2: Red, purple, or dark blue. The area is tender and may be slightly swollen.
- Days 3 to 5: The edges start turning green or dark blue-green as the body begins breaking down the pooled blood.
- Days 6 to 10: Yellow and light brown tones appear, sometimes with a greenish center still visible.
- Days 10 to 14: The bruise fades to a light yellowish-brown and then disappears.
This is a rough guide. A bruise on your shin, where there’s less cushioning tissue between the skin and bone, often heals slower than one on a fleshy area like your thigh. Bruises on the legs in general tend to take longer because blood pools downward with gravity.
Larger Bruises and Hematomas
When a harder impact causes more blood to collect in one area, you can develop a hematoma, which is essentially a bruise with a noticeable lump of pooled blood underneath. The swelling and pain from a hematoma typically resolve within one to four weeks depending on size, but the skin discoloration can persist for months in severe cases. The color changes follow the same progression, just on a longer schedule.
If you can feel a firm lump beneath a bruise that isn’t shrinking after a few days, that’s worth monitoring. Most hematomas resolve on their own, but large or painful ones occasionally need medical drainage.
What Speeds Up Healing
The most effective thing you can do happens in the first few hours. Applying ice (with a cloth barrier to protect the skin) in 10- to 20-minute intervals helps constrict damaged blood vessels and limits the amount of blood that leaks into the tissue. This makes the resulting bruise smaller and faster to heal. Ice is most useful within the first eight hours after the injury.
After that initial window, the goal shifts. Your body now needs blood flow to deliver the immune cells that clean up the pooled blood. Gentle warmth, like a warm washcloth, can help increase circulation to the area and may speed things along after the first day or two. Keeping the bruised area elevated also reduces swelling early on.
There’s some evidence that topical vitamin K cream applied twice daily can help bruises resolve faster, though the effect is modest. Bromelain, an enzyme found in pineapple, has also shown promise. One study found that participants who drank about 350 milliliters of pineapple juice twice daily for a week before and after facial surgery had noticeably less bruising and faster recovery. These are supplementary measures, not dramatic accelerators, but they can shave a few days off the timeline.
Why Some People Bruise More Easily
Age is the biggest factor. As you get older, your skin thins and the fatty layer beneath it shrinks, leaving blood vessels with less protection. The blood vessel walls themselves also become more fragile. This is why older adults often notice bruises they don’t remember getting.
Blood-thinning medications and common pain relievers like aspirin and ibuprofen reduce your blood’s ability to clot, which means more blood escapes from damaged vessels and bruises become larger and slower to fade. If you’ve recently started a new medication and notice a sudden increase in bruising, that’s worth bringing up with whoever prescribed it.
Nutritional deficiencies also play a role. Vitamin C is essential for maintaining strong blood vessel walls, and vitamin K is needed for proper clotting. Low levels of either can make you bruise more easily and heal more slowly.
Signs a Bruise Needs Attention
Most bruises are harmless and just need time. But certain patterns warrant a closer look:
- Bruises lasting more than two weeks without any improvement in color or size
- Frequent large bruises that appear without a clear cause
- Bruises on the chest, stomach, back, or face that you can’t explain
- A bruise that keeps recurring in the same spot
- Painful swelling or a growing lump beneath the bruise
- Unusual bleeding elsewhere, such as nosebleeds, blood in urine, or bleeding gums alongside easy bruising
Unexplained bruising paired with excessive bleeding can sometimes signal a platelet disorder or clotting problem. A family history of easy bruising or bleeding makes this more likely. A black eye that affects your vision also needs prompt evaluation, since the trauma may extend beyond the skin to the eye socket or the eye itself.