What Is a Sandalwood Accord, and Why Is One Material Not Enough?
Sandalwood is the most sought-after woody note in perfumery: creamy, milky, warm and close to the skin. The problem is that genuine Indian sandalwood oil is both very expensive and limited in supply.
That is why most of the sandalwood effect in perfumes today is built with synthetic sandalwood molecules. Yet none of these molecules alone gives every facet of the natural oil: one is creamy but flat, one is powerful but sharp, one diffuses but lacks volume. A sandalwood accord is the craft of bringing these molecules together so that each covers the other's shortcomings.
| Material | CAS No | Ratio | Role in the accord |
|---|---|---|---|
| Sandalore | 65113-99-7 | 25% | Body: soft, warm sandalwood |
| Bacdanol | 28219-61-6 | 20% | Creamy volume |
| Iso E Super | 54464-57-2 | 15% | Transparent woody diffusion |
| Ebanol | 67801-20-1 | 10% | Strength and natural-oil character |
| Cedarwood Oil (Virginia) | 8000-27-9 | 8% | Dry woody skeleton |
| Ethylene Brassylate | 105-95-3 | 8% | Musky softness, longevity |
| Polysantol | 107898-54-4 | 7% | Milky, dense sandalwood accent |
| Javanol | 198404-98-7 | 3% | Very powerful, long-lasting sandalwood trail |
| Guaiacwood Oil | 8016-23-7 | 3% | Smoky, balsamic depth |
| Vanillin | 121-33-5 | 1% | Milky sweetness |
Component by Component: The Role of Each Material
Four sandalwood molecules carry the backbone of the accord; the rest give them a foundation and volume.
Sandalore and Bacdanol together are the body of the accord. Both are soft and accessibly priced; because they can be used at high levels, they build the volume. Sandalore is warmer, Bacdanol creamier.
Ebanol adds strength and naturalness. Its rich, slightly musky character is one of the facets that most recalls real sandalwood oil. Polysantol gives the milky, dense accent. Javanol is an extremely long-lasting molecule that is perceptible even at very low doses; its ratio looks small, but it defines the sandalwood trail in the dry-down.
Iso E Super opens the sandalwood up: with its transparent, velvety woody texture it increases the accord's diffusion. Cedarwood adds a dry skeleton, guaiacwood a slightly smoky depth. Ethylene Brassylate rounds the corners with its musk and extends longevity. A small dose of vanillin brings out the milky side of sandalwood.
Building the Accord: Order, Layering and Resting
A sandalwood accord consists almost entirely of base-note material; its scent therefore opens slowly, and evaluating it takes patience.
- Weigh the body
Weigh and combine Sandalore and Bacdanol on a precision scale. This pair gives the accord's basic character; smell this alone first.
- Add the powerful molecules
Add Ebanol, Polysantol and Javanol. Adding Javanol from a pre-made 10% dilution rather than neat reduces weighing error.
- Build the woody foundation
Add Iso E Super, cedarwood and guaiacwood. Guaiacwood oil can solidify at room temperature; warm it gently to make it pourable.
- Soften and complete
Add Ethylene Brassylate and vanillin. Vanillin is a solid; stir until it has dissolved completely.
- Rest and follow on a blotter
Rest the accord for a few days in a closed bottle. Smell it on a blotter in the first hour, at the sixth hour and the next day; the true character of a sandalwood accord emerges not in the first hour but in the dry-down.
Variations: Creamy, Dry, Natural and Economical Directions
The same skeleton can be pulled in several directions.
Creamier and milkier: Raise Polysantol and vanillin slightly, lower the cedarwood. A very small dose of a lactone (coconut- or peach-toned) makes the milky effect more distinct.
Drier and more modern: Raise Iso E Super and cedarwood, remove the vanillin. The result is a more transparent, woodier and less sweet sandalwood that suits masculine and unisex compositions.
More natural: If the budget allows, replace a small part of the formula with genuine sandalwood oil. Even a small amount of natural oil adds depth and naturalness to the synthetic skeleton. Australian sandalwood oil is a more accessible option than Indian sandalwood.
More economical: Reduce Javanol and Polysantol and lean on Sandalore and Bacdanol. The accord loses strength and length but keeps its character.
IFRA, Safety and Frequently Asked Questions
Synthetic sandalwood molecules are generally well-tolerated materials; even so, verify each one's use limit from the current IFRA Standard and the supplier's documentation. The limit is set not by the accord's total level but by the individual substances and the product category. Natural oils (cedarwood, guaiacwood, sandalwood) may contain components that require allergen declaration.
Which fragrance family does a sandalwood accord belong to?
Why is genuine sandalwood oil so expensive?
Can synthetic sandalwood replace natural sandalwood?
Why is Javanol used at such a low level?
Why do I perceive my sandalwood accord as weak?
At what level is a sandalwood accord used in a perfume?
Which notes go well with sandalwood?
Is Iso E Super a sandalwood material?
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