The Trained Nose

Oud 24 Hours against Black Orchid Eau de Toilette

One number per era rather than one number overall — two fragrances can be near-identical at the opening and different things by the evening, and an average hides exactly that.
Ard Al Zaafaran

Oud 24 Hours

Woody Chypre · lasts about 9.1 h

How close, and when

Across a whole wearing, Ard Al Zaafaran Oud 24 Hours and Tom Ford Black Orchid Eau de Toilette are very close. They are nearest during the heart and furthest apart in the opening, which is the part a single figure would average away.

74% opening · 0–1 h
89% heart · 1–3 h
84% drydown · 3–8 h
Measured across all twenty-four facets, from the notes below — not from the families on the boxes. They share 4 of 19 materials, which is worth holding beside the figures: a pair can share almost nothing and still converge, because different materials can smell of the same things.

What AKIN predicts

AKIN predicts these two are alike, and the evidence behind that is substantial.

Two signals sit on this page and are never averaged: what the note pyramids measure these two to share, and what AKIN’s resemblance graph predicts. Where they part, that is the finding rather than a fault.

The pyramids, side by side

Compared by material rather than by spelling, so a note recorded two ways is not counted as a difference.
top
both — Bergamot
Oud 24 Hours only — Dark Chocolate, Mandarin Orange
Black Orchid Eau de Toilette only — Blackcurrant, Truffle, Ylang-Ylang
heart
Oud 24 Hours only — Gardenia, Jasmine, Ylang-Ylang
Black Orchid Eau de Toilette only — Black Orchid, Tuberose
base
both — Incense, Patchouli, Sandalwood
Oud 24 Hours only — Agarwood, Amber
Black Orchid Eau de Toilette only — Lotus, Vanilla, Vetiver

Other comparisons worth reading

Pairs involving one of these two where the notes are fully recorded on both sides and AKIN has enough evidence for the pair to be worth reading.