"Hellebore resembles the wild rose, but does not belong to their family. The scent is a pale green herbal, darkly rooty, with a faint rose and peony-like overtone."
In the Bottle: In the bottle the scent is dark and rooty. It smells like green plants. Almost earthy, but not like dirt in the way that Zombi smells.
On Skin: The root smell seems to have almost completely disappeared once it was on my skin. It smells floral, I can smell the rosey smell in it. My father said it smelled like a perfume that gets left behind in an elevator. It's a sweet smell (that may be the honey), but it has that certain tint that perfume gets. If I smell closely I can just barely smell the green of the plant.
Longevity: I forgot to put this on my Zombi post, but where I could still smell Zombi faintly at eight hours, this smell was gone much faster. I put it on around 11:30 and it was gone by 5:30, when I reapplied it.
Overall, I like the smell but it's a little more perfumey than I prefer. I've never smelt a Black Hellebore so I can't vouch for the scents accuracy.
The Black Phoenix Alchemy Lab has many, many types of scents. I recommend looking through them. Sometimes it's over whelming because there are so many of them, but it is good to pick a category that sounds interesting and go with it. The imp ears cost 4$ and the bottles seem to cost between 17$-27$.
If you are interested in Black Hellebore Honey, the link is here.