Aromatherapy has a problem. It gets mentioned in the same breath as chakra cleansing, moon-phase calendars and “detox” teas.
That's a shame, because it lumps two very different things together. On one side there's serious research into what scents do to the nervous system. On the other side there are healing claims that have nothing to do with science anymore.
At Sibicura, we work with scent because we believe in the serious side. But we don't want to use the term aromatherapy carelessly. What scents can actually do, what studies show, and where we should be careful with claims.
What aromatherapy actually is
The term dates back to the 1930s. French chemist René-Maurice Gattefossé coined it after noticing the wound-healing effect of lavender oil following a lab accident. From that grew a tradition of using essential oils deliberately to support wellbeing.
Today, aromatherapy describes a broad field: essential oils, incense sticks, scented candles, diffusers, sometimes massages or baths with plant extracts. What all these applications share: they use the sense of smell to produce a psychological or physical effect.
How scent works in the brain
The sense of smell holds a special position among the senses. Every other sensory impression is first processed in the thalamus, a kind of switchboard. Smell information bypasses this station. It goes directly into the limbic system, the area of the brain responsible for emotions, memory and the autonomic nervous system.
That has a consequence: a scent can trigger an emotional reaction before you consciously know what you smelled. You walk into a room, smell something, and suddenly you're in a different mood. That's not imagination. That's anatomy.
This is exactly why scents can influence the nervous system quickly, in both directions. Calming or stimulating.
What research actually shows
Lavender. Here the evidence is strongest. A 2019 meta-analysis (published in Frontiers in Pharmacology) evaluated 65 studies on lavender. The result: lavender has a measurable calming effect on the autonomic nervous system, reduces subjective anxiety, and can improve sleep quality in mild sleep disturbances.
Sandalwood. Studies suggest that sandalwood scent can slightly lower cortisol levels and is associated with heightened attention alongside relaxation.
Citrus scents. Bergamot, lemon and orange are often described in research as mood-lifting.
Rose. Rose oil appears to have a similar but gentler effect than lavender, with indications of an antidepressant component.
Peppermint, rosemary. These are considered stimulating. Studies show mild positive effects on concentration and memory.
What research doesn't support well: that specific scents “cure” specific illnesses. You shouldn't find that language in serious sources.
What research doesn't show
Scents don't cure depression. They can support wellbeing, but they're no substitute for therapy or medication in diagnosed conditions.
What burning incense does as a cultural practice can be observed and experienced. Spaces get marked, transitions become tangible, atmospheres shift. With terms like “cleansing energy”, though, some caution is warranted — they fall outside what can be objectively described. So we're not talking about energies being cleansed, but about atmospheres that change.
Scents also don't change your aura, your karma, or your higher self. Those are concepts that fall outside what research can examine.
Why it still works so personally
Even where the evidence for a particular scent isn't conclusive, there's a second, very strong mechanism behind why aromatherapy works for a lot of people. It's the link between smell and memory.
If you smell a particular scent often enough in a particular situation, your brain learns the connection. Over time, the scent alone is enough to trigger the associated mood.
How we work with this at Sibicura
Our four scents are composed so that they can support different moods. Not heal, not cleanse. Support.
Calma works with lavender, the scent with the strongest evidence for a calming effect, complemented by amber, myrrh and clary sage. Natura combines oakmoss, rose and lavender. Rosa and Terra round out the range with two further characters, more floral or more earthy.
To take with you
Aromatherapy isn't magic. But it isn't nothing either. It's a way of reaching the nervous system through a sensory channel that's particularly directly linked to emotion. What it can do can be measured. What it can't do shouldn't be claimed.
And the good part: you don't need a complicated theory to use it. A scent you like. A situation in which you experience it regularly. Over time, it becomes a tool that works in your everyday life.