Cassia Essential Oil
Cassia Essential Oil
Cassia Essential Oil (Cinnamomum cassia)
Cassia (Cinnamomum cassia) is steam-distilled from the bark, leaves and twigs of a close relative of true Cinnamon, producing a warm, sweet, spicy-woody aroma — often likened to walking into an aromatic bakery, with a more robust, earthy edge than cinnamon itself.
Diffused on its own, or blended with Lavender at bedtime, Cassia is traditionally used to promote a restful night's sleep, and its grounding, balancing character makes it a popular choice for meditation. It is also a favourite for diffusing during the colder months, valued for its cosy, spicy scent and traditional role in supporting healthy immune function. In a well-diluted massage blend, Cassia has traditionally been reached for to ease minor muscular aches and support comfort during menstrual cramping or hot flashes.
Emotionally, Cassia is said to encourage a sense of inner strength, courage and self-assuredness — supporting confidence when trying new things — while its rich, spicy-sweet warmth also lends it a reputation as a sensual, uplifting aroma.
This one deserves a little extra care: Cassia is one of the most potent oils in our range, so it's best enjoyed aromatically — in a diffuser or vaporiser — rather than applied to the skin. If it does go in a blend, dilution needs to be extremely low, always patch test first, and keep it well away from the eyes, mucous membranes, pregnancy, breastfeeding and children. Given how little goes a long way, we'd suggest leaving skin blending to professionally formulated products rather than DIY.
Specifications
| Specification | Detail |
|---|---|
| Botanical Name | Cinnamomum cassia |
| Plant Part Used | Bark, Leaves and Twigs |
| Extraction Method | Steam Distilled |
| Origin | China |
| Purity | 100% Pure and Natural |
| Appearance | Pale Yellow to Orange-Brown Liquid |
| Specific Gravity | 1.025 to 1.105 @ 20°C |
| Refractive Index | 1.595 to 1.615 @ 20°C |
| Shelf Life | 2 Years (Properly Stored in a Cool, Dark Place) |
Uses ▼
Burners and vaporizers
Diffuse Cassia on its own, or blend with Lavender at bedtime to promote restful sleep. Its warming, spicy-sweet aroma is popular during the colder months, and its grounding character makes it a useful aid for meditation and building quiet confidence.
Blended massage oil or in the bath
Used in a very well-diluted massage blend, Cassia is traditionally reached for to ease minor muscular aches and support comfort during menstrual cramping or hot flashes. Always dilute thoroughly in a carrier oil before any skin contact and patch test first.
Blended in base cream
Because Cassia is one of the most potent oils in our range, it is not recommended for direct use in leave-on skincare or home-blended cream preparations. Where it appears in commercial cosmetic formulations, it is used at extremely low, professionally calculated percentages — well below what can be safely achieved in DIY blending.
Blends Well With
| Although essential oils blend well with one another, Cassia oil goes particularly well with other essential oils such as clove bud, coriander, cardamom, frankincense, ginger, grapefruit, lavender, rosemary and thyme. |
Usage & Formulation Guide ▼
For soap makers, natural perfumers and cosmetic formulators. These are starting points, not finished formulas — always confirm compliance, stability and safety (including IFRA usage limits) for your own finished product before use.
Fine Fragrance & Perfumery
Cassia is a classic warm, spicy-woody base note in oriental, gourmand and spice-forward perfumery, often paired with vanilla, amber, clove and woody accords. Because Cassia oil is naturally very high in trans-cinnamaldehyde (commonly 70–90%), IFRA's Cinnamic Aldehyde Standard caps fine fragrance use (Category 4) at around 0.25% cinnamaldehyde in the finished concentrate — which in practice means the whole oil itself needs to sit at only a small fraction of a percent of your formula. Always calculate compliance from the cinnamaldehyde content on this batch's Certificate of Analysis, not from a generic average.
Cold-Process Soap — Trace Use Only
Some soap makers use a small amount of Cassia or Cinnamon Cassia oil for its warm spice note, but this is a genuinely contentious oil to work with in handmade soap: cinnamon- and cassia-scented bars have a well-documented history of causing skin irritation, burning and contact dermatitis, even in fully cured soap, due to residual cinnamaldehyde. IFRA's rinse-off category (Category 1) limits cinnamaldehyde to roughly 0.045%, which — given Cassia's high cinnamaldehyde content — typically works out to well under 0.1% of the whole oil, noticeably lower than the rates used for many other spice or floral oils. If you include it at all, stay at the low end, test cured bars on a small area first, and consider that customers with sensitive skin are more likely to react to a cassia-scented bar than to most other fragrances.
A Note on Working With High-Cinnamaldehyde Oils
Cassia's cinnamaldehyde content varies from batch to batch, so treat the figures above as a starting reference and confirm against this batch's Certificate of Analysis before finalising a formula. In line with our own guidance for this oil (a 0.05% maximum in any topical dilution), we do not recommend Cassia for leave-on skincare, lotions or serums under any circumstances — keep formulation use to rinse-off soap and fragrance/aromatic applications only.
Product Documents SPECIFICATIONSSAFETY DATA SHEETIFRA GUIDELINESUSER GUIDE |
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Cassia Essential Oil (Cinnamomum cassia)
Cassia (Cinnamomum cassia) is steam-distilled from the bark, leaves and twigs of a close relative of true Cinnamon, producing a warm, sweet, spicy-woody aroma — often likened to walking into an aromatic bakery, with a more robust, earthy edge than cinnamon itself.
Diffused on its own, or blended with Lavender at bedtime, Cassia is traditionally used to promote a restful night's sleep, and its grounding, balancing character makes it a popular choice for meditation. It is also a favourite for diffusing during the colder months, valued for its cosy, spicy scent and traditional role in supporting healthy immune function. In a well-diluted massage blend, Cassia has traditionally been reached for to ease minor muscular aches and support comfort during menstrual cramping or hot flashes.
Emotionally, Cassia is said to encourage a sense of inner strength, courage and self-assuredness — supporting confidence when trying new things — while its rich, spicy-sweet warmth also lends it a reputation as a sensual, uplifting aroma.
This one deserves a little extra care: Cassia is one of the most potent oils in our range, so it's best enjoyed aromatically — in a diffuser or vaporiser — rather than applied to the skin. If it does go in a blend, dilution needs to be extremely low, always patch test first, and keep it well away from the eyes, mucous membranes, pregnancy, breastfeeding and children. Given how little goes a long way, we'd suggest leaving skin blending to professionally formulated products rather than DIY.
Specifications
| Specification | Detail |
|---|---|
| Botanical Name | Cinnamomum cassia |
| Plant Part Used | Bark, Leaves and Twigs |
| Extraction Method | Steam Distilled |
| Origin | China |
| Purity | 100% Pure and Natural |
| Appearance | Pale Yellow to Orange-Brown Liquid |
| Specific Gravity | 1.025 to 1.105 @ 20°C |
| Refractive Index | 1.595 to 1.615 @ 20°C |
| Shelf Life | 2 Years (Properly Stored in a Cool, Dark Place) |
Uses ▼
Burners and vaporizers
Diffuse Cassia on its own, or blend with Lavender at bedtime to promote restful sleep. Its warming, spicy-sweet aroma is popular during the colder months, and its grounding character makes it a useful aid for meditation and building quiet confidence.
Blended massage oil or in the bath
Used in a very well-diluted massage blend, Cassia is traditionally reached for to ease minor muscular aches and support comfort during menstrual cramping or hot flashes. Always dilute thoroughly in a carrier oil before any skin contact and patch test first.
Blended in base cream
Because Cassia is one of the most potent oils in our range, it is not recommended for direct use in leave-on skincare or home-blended cream preparations. Where it appears in commercial cosmetic formulations, it is used at extremely low, professionally calculated percentages — well below what can be safely achieved in DIY blending.
Blends Well With
| Although essential oils blend well with one another, Cassia oil goes particularly well with other essential oils such as clove bud, coriander, cardamom, frankincense, ginger, grapefruit, lavender, rosemary and thyme. |
Usage & Formulation Guide ▼
For soap makers, natural perfumers and cosmetic formulators. These are starting points, not finished formulas — always confirm compliance, stability and safety (including IFRA usage limits) for your own finished product before use.
Fine Fragrance & Perfumery
Cassia is a classic warm, spicy-woody base note in oriental, gourmand and spice-forward perfumery, often paired with vanilla, amber, clove and woody accords. Because Cassia oil is naturally very high in trans-cinnamaldehyde (commonly 70–90%), IFRA's Cinnamic Aldehyde Standard caps fine fragrance use (Category 4) at around 0.25% cinnamaldehyde in the finished concentrate — which in practice means the whole oil itself needs to sit at only a small fraction of a percent of your formula. Always calculate compliance from the cinnamaldehyde content on this batch's Certificate of Analysis, not from a generic average.
Cold-Process Soap — Trace Use Only
Some soap makers use a small amount of Cassia or Cinnamon Cassia oil for its warm spice note, but this is a genuinely contentious oil to work with in handmade soap: cinnamon- and cassia-scented bars have a well-documented history of causing skin irritation, burning and contact dermatitis, even in fully cured soap, due to residual cinnamaldehyde. IFRA's rinse-off category (Category 1) limits cinnamaldehyde to roughly 0.045%, which — given Cassia's high cinnamaldehyde content — typically works out to well under 0.1% of the whole oil, noticeably lower than the rates used for many other spice or floral oils. If you include it at all, stay at the low end, test cured bars on a small area first, and consider that customers with sensitive skin are more likely to react to a cassia-scented bar than to most other fragrances.
A Note on Working With High-Cinnamaldehyde Oils
Cassia's cinnamaldehyde content varies from batch to batch, so treat the figures above as a starting reference and confirm against this batch's Certificate of Analysis before finalising a formula. In line with our own guidance for this oil (a 0.05% maximum in any topical dilution), we do not recommend Cassia for leave-on skincare, lotions or serums under any circumstances — keep formulation use to rinse-off soap and fragrance/aromatic applications only.
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Product Documents SPECIFICATIONSSAFETY DATA SHEETIFRA GUIDELINESUSER GUIDE |
