Top · heart · base
Pick a bottle size and strength, split the fragrance concentrate between top, heart and base notes, and get every amount in millilitres, drops and grams, plus the alcohol to add and how long to let it rest.
Bergamot & cedar (example)
Printed from peachlumin.beauty. Drops are approximate (20 drops per mL); weigh for accuracy.
Within the usual ranges for parfum, eau de parfum and eau de toilette. By weight the concentrate is 16.6% of the bottle.
| Note | Share | Volume | Drops | Weight | In bottle |
|---|---|---|---|---|---|
| Top notes | 30% | 1.35 mL | ≈ 27 drops | 1.22 g | 4.97% |
| Bergamot FCF (bergapten-free) | 66.7% | 0.9 mL | ≈ 18 drops | 0.81 g | 3.31% |
| Pink pepper | 33.3% | 0.45 mL | ≈ 9 drops | 0.41 g | 1.66% |
| Heart notes | 50% | 2.25 mL | ≈ 45 drops | 2.03 g | 8.28% |
| Lavender | 75% | 1.69 mL | ≈ 34 drops | 1.52 g | 6.21% |
| Geranium | 25% | 0.56 mL | ≈ 11 drops | 0.51 g | 2.07% |
| Base notes | 20% | 0.9 mL | ≈ 18 drops | 0.81 g | 3.31% |
| Cedarwood | 66.7% | 0.6 mL | ≈ 12 drops | 0.54 g | 2.21% |
| Vanilla | 33.3% | 0.3 mL | ≈ 6 drops | 0.27 g | 1.1% |
| All notes | 100% | 4.5 mL | ≈ 90 drops | 4.05 g | 16.6% |
"Share" is the part of its tier (or of the concentrate). "In bottle" is the share of the finished perfume by weight, the figure to compare with a supplier's IFRA certificate or a published skin maximum. Drops assume 20 per mL and are only approximate.
Ethanol is highly flammable (its vapour can ignite from about 13 °C / 55 °F). Mix away from flames, hobs and heaters, and keep the bottle closed and out of children's reach.
Batch size is the finished perfume you want, in millilitres or US fluid ounces; the chips fill in common bottle sizes. Fragrance concentrate is your oils' share of the bottle by volume: choose a type or type your own figure. Dilute with perfumer's alcohol for a spray, or a carrier oil such as jojoba for a roll-on.
The note split divides the concentrate between top notes (the bright opening that fades first), heart notes (the main character) and base notes (the long-lasting foundation). 30/50/20 is a common starting point, not a rule; the three must add up to 100%. Under Materials, list the oils in each tier with parts, and each gets its own amount.
The example is 30 mL of eau de parfum at 15%: 4.5 mL of concentrate (about 90 drops) and 25.5 mL of alcohol. Split 30/50/20, that is 1.35 mL of top notes, 2.25 mL of heart notes and 0.9 mL of base notes, or about 27, 45 and 18 drops. Bergamot FCF takes two of the three top-note parts: 0.9 mL, about 18 drops.
Drop counts assume 20 drops per mL, which is only approximate: drops vary with the dropper, the oil's thickness, temperature and the angle you hold the bottle. A 0.01 g scale is more reliable, and grams come from the densities under "Drops and densities". The "In bottle" column is each material's percentage of the finished perfume by weight, the figure to compare with a fragrance oil's IFRA certificate or an essential oil's published maximum.
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Check a shop firstIt is how the fragrance concentrate is shared out: 30% top notes, 50% heart notes and 20% base notes. It is a balanced place to start, not a rule. A fresh cologne often leans on its top notes, and a warm amber or woody blend on its base.
It depends on the strength you want. The usual conventions are about 5 to 15% for an eau de toilette, 10 to 20% for an eau de parfum and 15 to 40% for a parfum. For 30 mL of eau de parfum at 15%, that is 4.5 mL of concentrate and 25.5 mL of alcohol.
About 20 is the usual working figure, and the calculator uses it unless you change it. Real drops vary with the dropper, how thick the oil is and how you tilt the bottle, so count how many drops of your oil fill 1 mL, or weigh on a 0.01 g scale.
There is no fixed rule. Many makers rest an alcohol blend 2 to 6 weeks in a cool, dark place and smell it weekly; base-heavy or resinous blends can keep changing for 2 to 3 months. Oil blends change less and are often judged after a few days to two weeks.
Yes: choose jojoba or another carrier under "Dilute with" and the weights follow its density. For skin, the Tisserand Institute's guide suggests 1 to 3% for body oils and 3 to 10% for a rollerball used on a small area, much weaker than a spray perfume.
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