Nose blindness is a condition that refers to the loss of sense to certain odors after overexposure to them. It can also be called olfactory fatigue or fragrance fatigue. Nose blindness can be combatted by varying fragrances to keep consumers blind to the scent of a particular product, which also maintains levels of product perception and loyalty. However, when your nose picks up a new scent, it is highly sensitive to it, taking in all molecular information and deciding if it is safe or unsafe. If your limbic system determines that the scent is harmless, it will begin to ignore it to continue hunting out new potential dangers. This can lead to nose blindness or the perception that a scent is scentless.
Regarding perfumes, master perfumers can distinguish between ingredients that would smell identical to the untrained nose, and they commit hundreds of scents to memory. However, having a keen nose is not the only factor in becoming a successful perfumer.
In terms of ingredients, Riddle Oil offers both pheromone oils and fragrance oils. Pheromone oils interact with the wearers chemistry to create a unique scent, which often goes undetected by the wearer. Fragrance oils are more concentrated and "stick" to the application points better, lasting longer than alcohol-based sprays.