StoneStone
30 daysSustainably sourced diatomaceous earth, naturally porous to absorb and hold the fragrance within the stone, releasing its scent gradually over time. Matte, cool to the touch, and designed to blend seamlessly into grey interiors.
A slim block of porous stone or solid wood, infused with fragrance and essential oils. It snaps onto a magnetic visor clip and quietly does its work for a month at a time.

Most car fresheners are a plastic shell full of solvent, pretending to be nature. We took the shell away and started with nature itself.
airu is made from one natural material at a time: sustainably sourced diatomaceous earth or sustainably sourced wood. Their naturally porous structures absorb and hold the fragrance within the material, releasing the scent gradually into the air.
When the scent eventually fades, simply replace the block. The metal clip stays on your visor, ready for the next one.
StoneSustainably sourced diatomaceous earth, naturally porous to absorb and hold the fragrance within the stone, releasing its scent gradually over time. Matte, cool to the touch, and designed to blend seamlessly into grey interiors.
WoodSustainably sourced wood, sanded and left unpainted to let the natural grain speak for itself. Its porous structure holds the fragrance, releasing the scent gradually over time. Warm, tactile, made to belong in the cabin.
Sustainably sourced diatomaceous earth or solid wood, fragrance and essential oils. Vegan, cruelty-free and pet-friendly.
No parabens, phthalates, formaldehyde, DEA, mineral oil, petroleum, propylene or dichlorobenzene.
Both snap onto the same magnetic visor clip. No adhesive, no vent clip, no cord.
No glue, no screws, no spring to tire out. A single anodised sheet folded twice, tensioned to grip the visor, and magnetised so the stone or the wood simply snaps onto its face. It comes in two finishes and outlives every block you will put on it.


Vanilla and golden amber softened by French lavender. Warm and slightly sweet without turning into dessert. The blend we made first, and the one we kept coming back to.


How we imagine itSlide the metal clip onto your visor so that the ledge faces down when the visor is closed.
Open one side and leave the block until the first rush of scent has settled and no oil is visible on the surface.
Set the block against the clip. The magnet pulls it flat. Line it up so it doesn't overhang on either side.
Keep spares sealed in the bag and out of the sun. Replace the block at least every 30 days; the clip stays put.
One rule: only ever mount the block on the metal clip provided. Contact with the oils can damage other surfaces.
“It smells like somewhere I’d actually want to stay.”
airu is a plastic-free, refillable car freshener: a slim block of porous natural stone (diatomaceous earth) or solid wood, infused with fragrance and essential oils, that snaps onto a magnetic visor clip and scents a car for about a month.
About 30 days. The porous block holds the oil and releases the scent as the cabin warms; when it fades you swap the block and keep the metal clip.
Yes. airu is a stone or wood block on an anodised aluminium clip: plastic-free, with no vent clip and no cords. Only the small block is replaced; the clip is kept for good.
Yes. airu is vegan, cruelty-free and pet-friendly, made with fragrance and essential oils, and free of parabens, phthalates, formaldehyde, mineral oil and petroleum.
Most car fresheners are a plastic shell full of solvent. airu is a single natural material, stone or wood, that holds the scent in its grain. You replace only the small block; the visor clip stays for good.
Three blends to start: Amber (warm, resinous), Grove (green, citrus) and Open Air (clean, fresh). Each block scents the cabin for about a month.
It snaps magnetically onto a slim anodised-aluminium clip that grips your sun visor, with no adhesive, no vent clip and no cords. The clip comes in copper or black.
airu is making a small first run for autumn 2026. Join the waitlist with your email and your material and scent preference, and airu writes once when it is ready.
We’re making a small first batch. Leave your email, and we’ll write just once, when it’s ready.