A rook piercing is a piercing of the anti-helix. When pierced, the needle passes through quite a thick piece of cartilage; therefore the healing process will take between 10 and 12 weeks. This part of the ear is sensitive and bacteria can cross from things like using a telephone. It is really important to keep the area clean at all times during, and preferably after, the piercing has healed in order to lower the risk of infection.
Boil a cup of water and mix with 1/8 teaspoon of sea salt.
Leave the sea salt solution until it is cool enough to touch. It should still be warm when you apply it to the piercing.
Wash your hands thoroughly, then dip a small piece of cotton wool or gauze pad in the salt water solution. Soak the piercing and gently wipe off any blood or puss which may have leaked from the area.
Repeat three to five times a day until the piercing has fully healed.