Wounds and cuts heal faster if there is no pressure on them and if they are kept relatively motionless. Movement disrupts the formation of the new blood vessels. Bandages keep the wound clean, keep harmful bacteria out, and maintain moisture to prevent your skin from drying out. Bandages should be changed daily.
You must wait at least eight weeks (56 days) between donations of whole blood and 16 weeks (112 days) between Power Red donations. Platelet apheresis donors may give every 7 days up to 24 times per year. Regulations are different for those giving blood for themselves (autologous donors).
Newly tattooed individuals may need to wait between 6 to 12 months to give blood. It is generally safe to give blood after getting a tattoo. If people are pierced in a thoroughly inspected shop, they can give blood right away. A blood donation station. One empty and one full pint-sized blood bag. Red blood cells.