You had me at “eat it”. What’s it taste like?

I'm not sure a product which you can and will run out of really fits this community.

For what it's worth, lanolin is not vegan, despite the pictured ad claiming it's ethically sourced and implying that animals are not harmed. Lanolin is produced from wool, and if you care about such things, often a result of unpleasant (to say the least) farming conditions for sheep. Probably there are some sources that aren't so bad, but apparently there are reports that wool industry practices are pretty horrific to the sheep. (Read more here and here if you like.)

On the positive side though, there are plant-based lanolin alternatives, including vegan nipple creams. I couldn't find any source that weren't also ads for a product, so I'll leave the search up to whoever is interested in them.

For anyone curious about the ethical discussion folks are having

Crude lanolin constitutes about 5–25% of the weight of freshly shorn wool. The wool from one Merino sheep will produce about 250–300 ml of recoverable wool grease. Lanolin is extracted by washing the wool in hot water with a special wool scouring detergent to remove dirt, wool grease (crude lanolin), suint (sweat salts), and anything else stuck to the wool. The wool grease is continuously removed during this washing process by centrifuge separators, which concentrate it into a waxlike substance melting at approximately 38 °C (100 °F).

https://en.wikipedia.org/wiki/Lanolin?wprov=sfla1

It seems like lanolin is typically extracted from the shorn wool, so I assume the comments about ethics are with respect to harvesting that wool in the first place, so if you're interested in learning more, that's where you'd want to research. I'm not intending to debate whether it is or isn't ethical (I know next to nothing about the wool industry), I just had no idea how lanolin might be obtained from a sheep, so I looked it up and figured I'd share since it's relevant to some of the conversation here

Lanolin? L-Lanolin. Like sheep’s wool?

What if I don't have lanolin nipples, though? Do they have a human skin nipple lotion?

Good for nipples, babies, and moustaches, gotcha.

Now what about those other thousands of uses? 🤔

Omg yes. Learned that on a sailboat. Lanicote. Not just for bolts.

FYI lanolin (or "sheep grease") is an animal product that is obtained through violence, cruelty, and at industrial scale, atrocity. This may not concern you, but just in case it does.