Vaseline is a well known product that is produced around the world owned by Anglo-Dutch company Unilever.
It is renown as a lubricator and can be used for many different purposes.
Vaseline products include plain petroleum jelly, soaps, lotions, cleansers, deodorants and lubricants.
In many languages the word “Vaseline” is used as generic for petroleum jelly.
In Portuguese and some Spanish speaking countries the Unilever products are called Vasenol. (source)
So can hamsters eat vaseline?
Unfortunately, hamsters can’t even touch vaseline at all.
It will make them sick and may possibly kill them and so is something to avoid hamsters coming into contact with.