Alcohol-based inks will stain permanently, though they aren't exactly safe for humans. Kissing and licking could present problems. So the answer to your question is yes, but I'd recommend human-safe lipstick for coloring instead even if it doesn't last as long.wordengine wrote:Is there not a way to stain the nipples and lips so they don't fade?
I know this thanks to some yellow tint on the back of Brie's neck and shoulders and around her ears thanks to ink that came out of the first wig I colored. I learned afterwards to let the wig air dry for at least two days first. (It felt dry, but obviously wasn't entirely before I put it on and some of the ink seeped out.) Stain remover made it less noticeably yellow, but its still there and likely not ever going away. Even washing her shoulders with rubbing alcohol and baby oil wouldn't bring out the color entirely. Fortunately her hair is long so its usually covered up, but I see it easily when the head is removed.
You could find red alcohol ink at hobby stores like Michael's (where I got my yellow ink in a three pack of yellow, red, and purple.) Pink, brown, tan and other fleshy colors may be tougher to find. If you try this, start with very little ink, possibly diluted with rubbing alcohol or else you might get a very intense, fake-looking color. I didn't do it to Brie's skin on purpose so I don't know how much it might take. It took surprisingly little ink to color a white wig to Brie's platinum blonde color though (only about 3ml)