Olfactory Memory and Repetition:
the science of rituals that make us feel good

There is a precise scientific reason why a scent can, in a fraction of a second, transport you back to a room that no longer exists, next to a person who is no longer there, in a summer twenty years ago. And there is an equally precise reason why repeating the same gesture every day — the same cream, the same fragrance, the same ritual — is not monotony, but one of the most effective ways the human brain knows to calm itself.

Essenza Lago di Como is born precisely at the intersection of these two neuroscientific truths: artistic perfumery and luxury skincare not merely as aesthetics, but as daily rituals that act, measurably, on emotional well-being. In this article, we will explore why — supported by scientific literature, not just intuition.

The power of olfactory memory

Among all senses, smell occupies a unique position in the architecture of the human brain — and it's a structural difference, not just a figure of speech.

A direct shortcut to emotions

When you see something or hear a sound, the sensory signal makes a stop in the thalamus — a kind of switchboard that sorts information — before reaching the brain areas related to memory and emotion. Not so with smell. Signals originating from the olfactory bulb, the structure just above the nasal cavity, reach two crucial regions almost directly: the amygdala, which generates and processes emotions, and the hippocampus, which forms and organizes memories. This direct anatomical connection — documented in recent neuroimaging studies and comparative anatomy literature — is unique among all sensory systems, and it's why odors arrive "loaded" with emotion even before you have consciously recognized them.

Researchers at Harvard Medicine Magazine describe this circuit as a pathway that, if the hippocampus judges an odor to be linked to an emotionally significant moment, can store that information indefinitely: even decades later, the same scent can suddenly resurface the memory and emotion of the original instant. This is the scientific explanation for the so-called "Proust phenomenon," from the famous madeleine passage in Remembrance of Things Past — a literary anecdote that contemporary neuroscientific research has transformed into a measurable mechanism.

Why no other sense has the same effect

Sight and hearing, passing through the thalamus, reach memory already "filtered" and mediated by cognitive processing. Olfaction, by bypassing that step, produces more involuntary, immediate memories, more intensely linked to the original emotional component. It is no coincidence that memories evoked by an odor are described in the literature as more vivid and more loaded with sensory details than memories recalled by a word or an image.

At the level of biological substratum, the piriform cortex (which identifies "what odor it is"), the amygdala (which assigns it an emotional tone), and the hippocampus (which archives it as a memory) work in very rapid sequence — milliseconds — precisely because the olfactory bulb projects directly onto these structures, instead of having to pass through intermediate stations.

What it means for a perfume worn every day

Every time you apply a fragrance, you are not simply "perfuming" your skin. You are building, day after day, an association between that specific scent and the moments you wear it: in the morning before going out, in the evening before an important occasion, the repeated gesture in front of the mirror. Over time, that fragrance stops being just a pleasant smell — it becomes a neurological anchor to a specific emotional state, recallable in an instant.

This is why, in the creation of Essenza fragrances, each olfactory note is chosen not only for its aromatic profile, but for the emotional association it can build over time: citrus and light for morning energy, woods and amber for evening reflection. It's not marketing — it's neuroscience applied to everyday experience.

Why repetition reassures the brain

If the first part explains why a scent can strike like lightning, this second part explains something seemingly opposite: why repetition — the same gesture, the same scent, the same cream, every day at the same time — produces a profound calming effect, not boredom.

The mere-exposure effect: familiarity as a signal of safety

In 1968, social psychologist Robert Zajonc published one of the most replicated findings in the history of experimental psychology: repeated mere exposure to a stimulus — a word, a sound, an object, even meaningless symbols — is sufficient, by itself, to increase liking for that stimulus. Zajonc called it the "mere exposure effect": you don't need to understand why something is liked, just to have encountered it multiple times.

The explanation that subsequent research has solidified is as simple as it is powerful: the human brain is programmed to treat the unknown with caution and the familiar as "all clear," an implicit signal of safety. The more recognizable a stimulus becomes, the less it requires the brain to vigilantly evaluate it — and this reduction in cognitive effort is perceived, literally, as a pleasant sensation. Familiar is fluid, fluid is easy, easy is safe, safe is pleasant: this is the logical chain at the heart of the effect.

Not just perception: also physiology

Studies subsequent to Zajonc have shown that the mere-exposure effect is significantly reduced in the presence of anxiety — whether it is a transient state or a stable personality trait. In other words: when the nervous system is already on alert, familiarity struggles to produce its normal calming effect. This suggests a direct link between the degree of activation of the brain's alarm system and the ability of repetition to generate comfort — repetition works as a natural "antidote" precisely in moments when the brain needs it most, provided the state of alert is not already too high.

Rituals, according to Harvard behavioral science

Behavioral psychologists Francesca Gino and Michael Norton, from Harvard Business School, have dedicated years of experimental research to a seemingly simple topic: why humans, when faced with uncertainty or loss, instinctively rely on rituals — sequences of symbolic, repetitive actions, without direct practical function in themselves.

In a study published in 2014 in the Journal of Experimental Psychology: General, Norton and Gino showed that people who perform a ritual after experiencing a loss — whether of a loved one, a relationship, or even a missed opportunity — report significantly lower levels of grief compared to those who do not. The psychological mechanism identified by the researchers is the regained sense of control: the ritual, repeated and predictable, gives the brain a sense of mastery over the situation, even when the situation itself remains out of one's control.

A second line of research by the same group, conducted with Alison Wood Brooks and other colleagues, showed that performing a ritual before a task that generates performance anxiety — public speaking, an interview, a performance — reduces anxiety measured both physiologically and subjectively, and improves subsequent performance. The interesting fact: the effect is observed even in those who explicitly state they do not believe in the effectiveness of rituals. You don't need to believe in it for it to work — it's a mechanism that acts regardless of rational conviction.

Why a daily ritual is not "just a habit"

There's a subtle but important difference between an automatic habit — brushing your teeth without thinking — and a ritual experienced with intention, where the gesture is performed with awareness of the moment and its meaning. Research on rituals and performance anxiety has specifically defined rituals as sequences of symbolic actions, often characterized by formality and repetition, distinct from purely automatic actions precisely because of the symbolic and intentional component. It is this component — the attention brought to the gesture, not just its mechanical repetition — that makes the difference between "a habit" and "a reassuring ritual."

Where olfactory memory and repetition meet

Taken together, these two areas of research paint a coherent and powerful picture. On the one hand, smell has privileged and direct access to the brain structures that generate emotion and memory — no other sense builds memories with the same immediate intensity. On the other hand, the predictable repetition of a gesture — wearing the same fragrance, applying the same cream, following the same ritual — communicates a signal of safety to the brain that reduces anxious activation and increases the sense of control.

A daily olfactory ritual, therefore, acts not on one track but on two simultaneously: it builds a powerful emotional anchor over time (olfactory memory) and, every day it is repeated, offers the nervous system a moment of predictability and control (effect of repetition). It is the combination of these two mechanisms — not a slogan, but two distinct bodies of scientific literature that converge — that explains why an apparently small gesture like applying a perfume or a cream can have a real, measurable effect on daily emotional well-being.

Building your ritual, with intention

In light of this science, an effective olfactory ritual has three precise characteristics:

• Consistency: the same fragrance or the same cream, applied at the same time of day, builds the strongest emotional anchor over time — it is repetition, not variety, that generates the calming effect.
• Intentionality: the gesture should be performed with a minimum of conscious attention — not as a distracted automatism, but as a recognized and lived moment, to activate the "ritual" component and not just "habit."
• Real sensory quality: for the emotional anchoring to be strong, the olfactory experience must be authentic and distinctive — not a generic perfume, but a fragrance that carries with it a recognizable history and identity over time.

It is precisely on these three principles that the Essenza experience is built: fragrances and creams designed to be repeated over time, not consumed once, with the stated goal of becoming part of a recognizable daily ritual — and, according to what science tells us, capable of truly impacting the emotional well-being of those who experience it.