The Complete Guide to Fragrance Oils

Fragrance oils are professionally created aromatic mixtures composed of natural materials, plant-derived molecules, and safe synthetic ingredients. They are designed by trained perfumers to deliver consistent olfactive performance across many product types — from personal care and cosmetics to candles and home fragrance.

Unlike essential oils, which come directly from plant extraction, fragrance oils:

How Are Professional Fragrance Oils Made?

All of our oils are formulated by Cécile Hua, a professional French perfumer with over 20 years of industry experience in Paris, New York, and consumer goods labs worldwide. Professional fragrance creation involves:

1. Creative direction: A concept, mood, material, or product application.
2. Formula construction: Dozens to hundreds of materials blended to form a balanced, stable fragrance.
3. Safety assessment: IFRA Category review, allergen profile, phototoxicity screening, and regulatory checks.
4. Stability testing: Performance in different bases (surfactant, wax, alcohol, emulsions, etc.).
5. Quality control: Every batch analyzed for consistency and purity.

This professional process is why our oils remain stable, strong, and clean — and why DIY blending is not recommended without proper evaluation.

Essential oils are beautiful materials — but they are not the best choice for most product applications and can carry stronger allergen, stability, or environmental burdens.

Because they are professionally balanced, our fragrance oils can be used in any scented product, including:

• Fine fragrance: perfume & cologne oils
• Home fragrance: candles & home fragrance
• Laundry: laundry & cleaning oils
• Personal care: soap & body care
• Haircare: shampoo & conditioner
• Room sprays: room spray oils
• Cold air diffusers: HVAC & nebulizing diffusers

Typical usage rates by product type

Starting dosage depends on the product, not on the oil. These are the typical rates published on our fragrance oil calculator, measured as a percentage of the finished product by weight:

These are general starting points. Your working rate depends on the base, the scent-throw target, and the oil’s own maximum usage level for the category you are formulating for.

All of our oils are compliant with the IFRA 51st Amendment, the globally recognized standard for fragrance safety. IFRA evaluates:

• dermal exposure limits
• restricted ingredients
• phototoxic materials
• safe use by product category

Every oil also includes:

• SDS for handling & transport
• Allergen declaration
• Optional detailed documentation upon request

In addition, we offer collections designed for specific safety or certification needs:

• Phthalate-free
• EWG compliant
• Eco-friendly
• Biodegradable
• ISO 9235 natural fragrance oils

We can also assist with IFRA-driven reformulation or custom compliance requirements: Fragrance Design Services →

All of our oils are:

• Highly concentrated (minimal solvent load)
• Professionally constructed using premium raw materials
• Designed for multi-category performance
• Stability-tested across real-world conditions
• IFRA compliant for safe use

This is why customers consistently experience stronger, cleaner, longer-lasting scent performance — often at lower dosages than commercial craft-store oils.

If you sell into the EU, the largest change to fragrance labeling in years took effect this year. Commission Regulation (EU) 2023/1545 expanded the list of fragrance allergens that have to be named individually in a cosmetic ingredient list from the two dozen then in force to 81, and it set the trigger concentrations in the regulation’s own words: when the concentration exceeds “0,001 % in leave-on products and 0,01 % in rinse-off products.”

The transition it allowed was three years for new products and five for stock already on the market, which lands on 31 July 2026 and 31 July 2028. The first of those has now passed, so a cosmetic placed on the EU market today has to carry the expanded declaration.

For most brands the work here is documentary rather than reformulation. An allergen declaration is a document your fragrance supplier calculates from the formula — you cannot derive it from an SDS, which answers a different question. It also counts materials that are not in the oil for their smell: benzyl benzoate is a solvent and a fixative as much as an odorant, and it is on the list, so a dilution choice can change a label.

The practical step is the same one that serves every other part of this guide: ask for the documents at the sampling stage, not at launch. An allergen declaration, an IFRA 51 Regulatory Data Sheet and an SDS together answer almost every regulatory question a product will raise.

“Full documentation” is a phrase every supplier uses and almost none of them define. It is worth being concrete about what the paperwork behind a professional oil actually consists of, and equally concrete about the fact that it is not identical from oil to oil.

Across the 35 IFRA 51 Regulatory Data Sheets Stock Fragrance publishes, the companion documents those sheets link to span 23 distinct statement types. The commonest are the ones most product work actually turns on:

The honest part of that picture is the unevenness. Fifteen of the 35 sheets link no companion documents at all, while the fullest links fourteen — not because the data does not exist, but because a statement is generally drawn up when a customer, a retailer or a market asks for it. A petroleum-free statement or an ISO 9235 natural statement is produced for the product that needs to make that claim.

So the useful question at sampling is not “does this oil have full documentation” but “which of these statements will my product, my retailer and my market require” — and then asking for exactly those. Anything on the list can be requested for any oil.

• Documentation request portal: Request documents →
• Fragrance Oil Calculator: Calculate usage rates →
• IFRA safety guide: Understanding IFRA →
• Fragrance learning hub: Blog index →