Mercury 
One of Those (2013)

In the absence of a place to be
She stands there looking back at me
Hesitates, and then turns away
She'll change so suddenly
She's just like mercury
Yeah, but she's alright with me

The first few times I tested this I found it disgusting – somewhat comparable to Secretions Magnifique, but much worse. The synthetic / metallic / animalic ambiance of nu_be Hg I is, I think, caused by the combination of violet, aldehydes, sandalwood plus who-knows-what-else. There are just way too many aldehydes here magnifying the sickly combination of violet and creamy sandalwood.

With several testings, my queasiness at the smell has dramatically disappeared and at this point my primary feeling about this concoction it that it is rather expensive and annoying boredom… when I smell it close to the skin. However, nu_be Hg has an almost-intriguing sillage – fresh and highly unusual… still synthetic and metallic, but at a distance the animalness (and disgust) seems to have disappeared. I find the sillage quite interesting but I still don't want to smell like this. Its interesting sillage has saved this from a thumbs down.

Mercury strikes immediately for a powerful and commanding citric/herbal/spicy geyser with a plain orangy vibe (mandarine/tangerine in huge amount), some sweet woods in the blend and a vague (but yet emerging from the background) soothing reverberation of balsams (myrrh, benzoin?). A bunch of concoctions jump in a while on mind (each one by a specific element, probably a single whiff, a nuance) as Mr Marvellous Byredo (the sparkling green/bitter/herbal citric feel), Eau de Cartier (with its initial citric cocktail subsequently leaning towards a more tamed musky/floral outcome), Baume Du Doge Eau d'Italie (yet orangy/creamy/green but more leaning towards the myrrh/sweet spices/frankincense side) and Nu_be Hydrogen (the strong mandarine note finally soothed by hints of vanilla and balsams--but with a less developed woody presence). I detect for sure some Secretion Magnifique's odd/brash facets "transferred" in here by the talented creator Antoine Lie. There is a "perennial" and sparkling prickliness along the trip till the end and i suppose is aroused in the air by a pepper-sweet spices-bitter citrus-ambergris interaction although the dry down tends to morph in to something slightly smoother, vaguely (just vaguely) creamy and woody (but with a still dry and pungent green/citric slightly aqueous/metallic temperament). The penetrating mandarine/tangerine's pungency is ever alive, fizzy and intensely inebriating and these elements let effectively us to suppose to be in presence of aldehydes, so, while many orangy/creamy concoctions around slide towards a boring hesperidic mellifluence this fragrance is till the end (despite a touch of soothing balsams) vibrating and yes "alive" (yet far from the hospital/disinfectant territories for sure). The final outcome is a woody/citric/sparkling/slightly mellow aroma with several plain dancing nuances. Sulphur and Mercury are great fragrances (confirming-whether furthermore necessary- the brilliancy of this niche italian brand) and (i agree with Alfarom on this) such polar opposites, dark/sulphureous the first, botanical, glaring and vibrating the second. Unisex while Sulphur is a masculine one to me. So powerful sillage and surprising duration on the skin.
P.S. After two or three hours the aroma finds finally its peace becoming more tamed and silky (though never linear), a smooth creamy/woody/orangy (even intense) aroma with (may be) some faint floral pattern and a still present aromatic greenness.