Laura Tonatto undertook the task of creating perfumes for Carthusia back in 2006 and Numero Uno was released in 2007. Ms. Tonatto has created a very masculine chypre which develops in a fairly traditional way but holds true to what I think she was trying to accomplish. The top of Numero Uno is a classic, some might say ubiquitous, mix of citrus and lavender as a tart orange note is cut with lavender. This is the opening of many scent journeys and there are no new revelations made in this one just a competent opening salvo which is well-executed. It is in the heart where things get interesting as it is here where Ms. Tonatto chooses to amp up the herbal character of the scent by making thyme the central note but pairs it with ylang-ylang and a camphor note to give the heart of this a vaporous beauty that is unique as it revolves from aromatic herbal to lush floral to the iciness of camphor. This makes for a beautiful heart of this scent. The base is back on common ground as vetiver, patchouli and a hint of musk bring this back to familiar surroundings. For a man looking for a masculine chypre I think Numero Uno could be just the ticket.