THE SCIENCE
The Science Behind Halsonus
Change Your Frequency
Your brain is always active, cycling through different wave states — from sharp focus to restful sleep. Each state plays an important role in how you think, feel, and move through the world. Research shows that scent and sound can influence these states, acting as subtle cues that help your body shift more easily between them. Halsonus translates this science into sensory tools designed to support the way you want to feel in daily life.
What Are Brain Waves?
Brain waves are patterns of electrical activity in the brain, created as neurons communicate with each other. Different frequencies are linked to different states of consciousness — from focused attention to dreaming sleep. Scientists often describe them as the body’s natural rhythms, guiding us through every moment of our day.
The Five States
GAMMA (30–100 Hz): Associated with insight, learning, memory, and high-level thinking.
BETA (12–30 Hz): Linked to active engagement, focus, and alertness.
ALPHA (8–12 Hz): Connected with calm, openness, and creative flow.
THETA (4–8 Hz): Present during meditation, intuition, dreaming, and deep relaxation.
DELTA (0.5–4 Hz): The slowest rhythm, tied to restorative sleep and physical healing.
How Scent and Sound Support the Mind
When you breathe in a fragrance, the signal doesn’t take the long route through logic or language — it goes straight from your nose to the limbic system, the part of the brain that shapes memory and emotion. That’s why scent can feel so immediate: a single inhale can ground you, energize you, or bring back a vivid memory in seconds. Music works in a similar way — a single note can shift your mood or bring a wave of clarity.
At Halsonus, we bring these two senses together. Each aromatherapy blend is paired with a curated soundscape, creating a layered ritual where scent and sound act as gentle cues. This combination offers your nervous system subtle but powerful invitations — helping you find calm, focus, creativity, or rest, right when you need it most.
The Brain Wave Collection
Each blend in the Brain Wave Collection is designed to correspond with one of the brain’s natural rhythms: GAMMA, BETA, ALPHA, THETA, and DELTA. Crafted with pure essential oils and paired with soundscapes that reflect each state, these products are both beautiful and functional.
GAMMA — Rosemary, lemon, and palo santo encourage clarity, focus, and insight.
BETA — Ginger, bergamot, and peppermint bring energy, alertness, and motivation.
ALPHA — Hinoki, juniper berry, and white grapefruit open space for creativity and calm.
THETA — Sandalwood, cedarwood, and clary sage foster deep relaxation and dreamlike reflection.
DELTA — Frankincense, sandalwood, and lavender support deep sleep and restoration.
Each blend can be experienced on its own, or paired with its matching soundscape for a layered sensory practice.
Sensory Synergy
When scent and sound converge, they create what we call sensory synergy — a combined effect that can feel more powerful than either sense alone. This is why each Brain Wave product is paired with an accompanying soundscape: to give you a simple but profound way to create atmosphere, shift energy, and support your body’s natural rhythms.
In Closing
Halsonus is built on the idea that science and ritual can meet in everyday life. When you light a Brain Wave candle, listen to its soundscape, or use one of our blends, you’re engaging in a subtle act of care — one that supports the way you want to feel in the moment. These tools are invitations: small, intentional cues that help you return to yourself with presence, trust, and ease.