use good anti-biotic ointment, the tattoo artist should already provide you with some, if not go to the store and buy some “Fougera” dont use anything scented or with any weird stuff in it thats not just the basics.
Apply small amounts 2-3 times a day whenever it feels dry or itchy. You dont want to put so much on that you can see it shine on your skin, just so that you can BARELY see it, if you put too much on the skin will get too moist and mushy and create a scab.
If you have too much just dap it off with a towel. use the ointment for a good 3 days and then switch to a good hand lotion. I bought some Curel for mine. Remember to buy the original version. But i also heard lubriderm is just as good. Use the lotion 2-3 times a day for 2-3 weeks, or however long your healing process is