How the blend builder works
Good blends follow the perfumer's top / middle / base framework:
- Top notes are bright and volatile — you smell them first, they fade first. Citrus oils, peppermint, eucalyptus.
- Middle notes are the "heart" — they emerge after the top note fades and last longer. Lavender, geranium, rosemary, clary sage.
- Base notes anchor the blend. They're slow-evaporating, rich, and carry the scent for hours. Sandalwood, vetiver, cedarwood, frankincense, patchouli.
A harmonious blend usually has all three in roughly a 30 : 50 : 20 ratio by drops — more middle than top, a little base to ground the rest.
What this widget gives you
- A 30 mL diffuser recipe with exact drop counts.
- Suggested oil pairings for each note you pick.
- A harmony note explaining why the combination works (or flagging if it's an unusual match).
Why 30 mL?
Because it's the most common ultrasonic diffuser reservoir size — and it's easy to halve for a 15 mL tabletop, double for a 60 mL nebulizer. Drop counts scale linearly.
Safety reminder
Diffusion is generally considered the safest way to use essential oils. A few sensible rules:
- Don't diffuse all day. 30–60 minutes, on-off, is safer than continuous running — gives your olfactory system (and your pets) a break.
- Ventilate rooms with children, pets, or someone asthmatic.
- Never diffuse phenolic oils (cinnamon, clove, thyme, oregano) near pets or children — they're too irritating for closed air.
Start your blend below.