If your eyesight is good, you don't have to worry too much. Laceration usually heals itself.
If you want the blood volume to recede slightly, you can add drugs that promote blood circulation and remove blood stasis. However, depending on the amount of blood, the absorption time may vary from one week to one month.
In addition, the attraction of hematoma moves from the back to the front, so in the process of absorption, there may be more blood in front, which is normal, so don't worry.