Airlux Signature Aroma Oil No. 229 Echo of Spring

Echo of Spring is a floral green designed for the way a room wears a fragrance — not the way skin does. It opens with bellflower, clove, settles into a heart of peach, persimmon, and lands on a base of musk that holds long after diffusion stops.

Designed for spaces where atmosphere is part of the design. The composition is calibrated for even ambient projection rather than skin-close radiance — the room reads the scent at consistent intensity from any corner.

Echo of Spring is for you if

• You design your space deliberately and want the air to be part of that design.
• You want the room to feel composed and intentional.
• You prefer atmospheric depth over bright energy.
• You read ingredient lists and want to know what you're putting into your air.

What's in the bottle

• 100% pure fragrance concentrate — no dipropylene glycol, no isoparaffin carriers, no water, no dyes.
• IFRA-compliant formulation, batch-tested for skin and inhalation safety.
• Vegan and cruelty-free, no animal-derived ingredients, no animal testing.
• Blended in California in-house by Airlux for consistent batch-to-batch character.
• Available in 10 mL, 30 mL, and 180 mL Eco Refill Bottle for daily scenting and long-term economics.

Echo of Spring is a Floral Green with a readable arc. The composition is designed so that at typical diffusion intensity, the full pyramid is perceptible — not just the brightest top notes.

Predicted Dominant Accords

Based on formulation chemistry and standard olfactory perception modeling, the most prominent accords readable in a room are Musk, Peach, Persimmon, Bellflower, Clove.Predicted dominance — not aggregated review data. Will be replaced with verified review-based perception once 50+ community reviews accumulate for this product.

Diffusion duration

Longevity rating: 5/10. A 6-hour cold-air diffusion session leaves Echo of Spring perceptible in the room for approximately 3–6 hours after diffusion stops, depending on room size, airflow, and absorbent surfaces.

Projection / sillage

Sillage rating: 6/10. Moderate projection — intimate to medium spaces.

Recommended diffuser settings

• Small room (under 200 sq ft): Intensity 30–40%, 15 min on / 30 min off.
• Medium room (200–400 sq ft): Intensity 50%, 15 min on / 20 min off.
• Large room (400–800 sq ft): Intensity 70%, 15 min on / 15 min off, or pair two diffusers.

How long a bottle lasts

At 50% intensity, 6 hours/day in a 200–400 sq ft room: the 10 mL lasts 2–3 weeks, the 30 mL lasts 6–9 weeks, and the 180 mL Eco Refill lasts 6–9 months.

Airlux publishes a quantified mood impact for every fragrance using the MEI™ (Mood Elevation Index) framework.

Echo of Spring's mood reading

Primary mood — Serene · Secondary mood — Romantic. Inner Voice: "I am at peace."

Echo of Spring scores 5.11 / 10 MEI.

The dimensions, briefly

• Mood Lift (5.60): Upward shift in baseline mood.
• Warmth (5.72): How enveloping the room feels.
• Social Ease (5.38): Support for relaxed conversation.
• Identity (4.88): Signature character of the space.
• Presence (4.55): How much attention the scent demands.
• Confidence (4.70): Whether the scent reassures or asserts.

Read the MEI methodology →

Echo of Spring is HumanSafe™ Verified with a Product Safety Score of A-. HumanSafe™ is an independent, science-based safety framework that scores ingredient safety at realistic use levels — not worst-case theoretical exposure, not fear-based ingredient blacklists.

What "application-aware" scoring means

The same ingredient is scored differently depending on whether it appears in a skin-contact product, a heated diffuser, or a cold-air ambient diffuser — because the actual exposure route changes the risk.

As of May 2026, Airlux is the only US-market luxury ambient scenting brand that publishes per-ingredient safety scores (INCI + CAS + concentration) with application-aware methodology.Last competitive audit: May 2026.

Read the HumanSafe methodology →