My newest tat is also three days old. So far all I've used has been soap and water, plus some Eucerin lotion.
I used to use triple A, but since changed to just straight up lotion. Specifically unscented lubriderm intense skin repair. Make sure to wash your hands and tat thoroughly before putting it on, then limit skin contact to anything while the lotion dries.
Your tattooist should have advised you on aftercare.
mayonnaise or cream?