Keep your daily olfactory enrichment ritual going with our 4-pack of pure essential oil refills. Each 15ml bottle is designed to support the brain through scent — the only sense wired directly to the brain's centers for memory, mood, and focus. Rotating a variety of aromas is at the heart of olfactory enrichment, so we've paired four of the most-loved scents to keep your routine fresh, stimulating, and effective.

• Peppermint — Crisp, cooling, and invigorating. A go-to aroma for moments when you want to feel alert and refreshed.

• Lavender — Soft, floral, and calming. The classic scent for winding down and creating a sense of relaxation.

• Bergamot — Bright citrus with a warm, uplifting depth. A balancing aroma that helps set a positive, grounded mood.

• Lemon — Clean, zesty, and energizing. A familiar scent to brighten your space and your headspace.

Rotating multiple scents is what makes olfactory enrichment work — variety keeps the olfactory system engaged. Use them in your diffuser, on a scent pad, or as part of your morning and evening routine to build a consistent aromatic habit that supports focus, calm, and overall well-being.