You should wait at least a month to dye your hair after surgery.
You should wait at least a month after any surgery before colouring your hair.
You should wait until you are off any medication relating to the surgery, and the wound from the surgery is visibly healed.
later
If you get highlights, you should wait for a day or two. If you dye all of your hair, you should wait two to three days.
about a month
i sec
When all wounds that can be exposed to those chemicals are healed. Your doctor can give advice when that will be.
i dont think you need to wait at all.
Forever and ever
after surgery? well you should wait a few days or weeks until you get back to your normal routine before you had the surgery
yes you should wait because your hair can either get damaged or turn into a color that you wern't aiming for
3 months.