Not saying you and I would call it “ethical” but there are for profit companies who will pay for someone’s funeral expenses to claim the body and sell it to researchers, universities, etc. So they didn’t donate their body to science but their family sold it because they couldn’t afford the service on their own.
Maybe not ethical, but legal, and therefore they may be able to claim it’s “ethical” in advertising.
Petroleum jelly like thing, to protect combs from freezing weather