My review is for the oil.
This musk is for those who are seeking straight-up animalic musk with nothing else. That's all I smell from beginning to end. It is completely linear. No flowers, no balsams, no vanilla, no frills. The price is quite good for such a musk.
Words that come to mind: Feral and ripe--as in "ripe armpit." I try to keep it classy, so I hate to say this, I really, really do, but it makes me think of an ass crack. I just picture those times on the bus, in the park or wherever, when I have encountered a man who is really out of shape, looks unkempt, sitting down, and everyone walking by can see the top of his butt sticking out of his saggy pants.
I would group this musk into the super naughty category, right in there with its buddies Muscs Koublai Khan (more floral) and L'Air de Rien (sweeter). I'm also reminded of Coty's Wild Musk, which is also fairly straightforward in its current incarnation, but Kiehl's doesnt have the honey-like sweetness of Wild Musk.
I think this stuff is absolutely brilliant. Awesome perfume. It will smell fantastic on the right person. I personally could not get comfortable wearing it in public. I need the vanilla, the rose or whatever else to be able to pull off something like this, but if this works on you, enjoy it!