How do you mix tattoo ink to get a deeper red?

For this, you will add very small amounts of black ink to the red and thoroughly mix the two until you come to a hue that you are happy with. Other than this, you can simply buy the shade of ink that you are wanting to save yourself the time. If you do mix the ink yourself, write down and keep notes on how many drops you added to the ink that gave you the desired shade so you don't have to go through the process all over again if you are mixing the ink per tattoo as opposed to mixing it by bottle.