Ever noticed how your bruise goes from red to blue, green, and finally yellow before disappearing? 🩵 That color change is actually your body healing itself. When you get a bruise, tiny capillaries under your skin burst, causing blood to leak into the surrounding tissues. This trapped blood appears red or purplish (0–2 hours) because it’s fresh and rich in oxygen. Within a day or two, as the oxygen level drops, the bruise turns blue or dark purple (1–2 days) — this means your body has started br