A fragrance pyramid arranges a blend by evaporation speed: a light top, a heart that carries the body, a base that lasts longest. This tool places Lê Mai oils into each tier and splits a total drop count by tier share.
Oils are pre-grouped using the Volatility chart. Any oil can be moved to another tier. Choices are stored in this browser.
estimated class
Shares are normalised to 100%. Drops are split evenly within a tier and rounded.
Drop counts here are ratios between oils in the blend, not the concentration used on skin. The final concentration must stay below IFRA limits and the dermal limits listed on each oil page. General rules are on Safety; convert to ml and percent with the Formula calculator.
Default shares. The tool starts at 25 / 45 / 30 percent for top, heart, base. This is a common starting convention in blending manuals, often given as 20 to 30 percent top, 40 to 50 percent heart, 25 to 35 percent base. It is a convention, not a rule. Strong oils such as cinnamon, clove or vetiver need a small share; light citrus oils may need more.
Unequal strength. One drop of ylang ylang and one drop of sweet orange do not give the same amount of odour. After a starting point, testing on a blotter over hours and days shows which tier dominates.
Bridging oils. Oils marked "Top → Heart" or "Heart → Base" in the Volatility chart fit either tier. The ▲ ▼ buttons move an oil between tiers.
Total drops. One ml of essential oil is roughly 20 drops, varying with viscosity and dropper type. 20 drops is about 1 ml of neat blend.