What is the 30 50 20 rule for aromatherapy?
The 30/50/20 rule Put simply, your blend will be made up from 30% top note oils, 50% middle note oils and 20% base note oils. So if your blend was 10 drops in total, you’d use 3 drops of a top note, 5 of a middle note and 2 of a base note. The 30-50-20 rule in essential oil blending is a guideline for creating well-rounded aromatic profiles. It divides a blend into three parts: 30% top notes, 50% middle notes, and 20% base notes. Top notes, like lemon or peppermint, are the first scents noticed but fade quickly.