# 40 Knots

Source: https://dupehacking.com/fragrances/40-knots
Published: 2026-06-02

40 Knots is a type formula published by Dupe Hacking, an amber woody composition, rebuilt from GC-MS analysis into 43 raw materials that can all be bought — no proprietary captives.

## Facts
- Materials in the formula: 43
- Olfactory family: Amber Woody
- Concentration: EDP
- Made for: unisex
- Top notes: Frankincense, Sea notes
- Heart notes: Leather, Cedarwood
- Base notes: Honey, Amber

## Main materials
The five largest lines by dose, in order:

1. Iso E Super (CAS 54464-57-2)
2. Habanolide (CAS 111879-80-2)
3. Cedramber (CAS 19870-74-7)
4. Ethylene Brassylate (CAS 105-95-3)
5. Hedione (CAS 24851-98-7)

The remaining 38 materials, the exact percentage of every line and the dilution each is weighed at are the paid part of this page: https://dupehacking.com/fragrances/40-knots

## How it compares
- 43 materials against a catalogue median of 45.
- Closest formulas by shared materials: Aoud Exclusif (29 in common), Ambre Nuit (28 in common), Antaeus (26 in common), Cosmic Pepper (26 in common).


## Citing this
Cite as: "40 Knots formula — Dupe Hacking", https://dupehacking.com/fragrances/40-knots