It’s really expensive and used to contain real musks. I’m not sure it does anymore as the sale of real musks is curtailed in many countries due to environmental reasons. Just keep in mind a synthetic isn’t necessarily worse or less effective than a natural scent- it just depends on how closely it matches. Plus, I take the view that if you are wearing pheromones, you don’t need all that much musk since most pheromones smell like musk anyways.