Frankincense CO₂ Extract vs Essential Oil and Absolute: Boswellic Acids and Resinic Acids
Frankincense is one of the most historically revered botanical materials in perfumery, medicine, and skincare. However, in modern cosmetic formulation, not all frankincense ingredients are equivalent.
The functional difference between Frankincense CO₂ extract and Frankincense essential oil is profound, both chemically and biologically.
This article explains why CO₂-extracted frankincense is fundamentally different, how boswellic acids redefine its cosmetic role, and when an essential oil is simply not enough.
Botanical Origin of Frankincense:
Frankincense is derived from the resin of trees belonging to the genus Boswellia:
- Boswellia Serrata.
- Boswellia Sacra
- Boswellia Carterii
- Boswellia Frereana
- Boswellia Rivae
- Boswellia Dalzielii.
- Boswellia Occulta.
The resin contains two chemically distinct fractions:
- Volatile aromatic compounds.
- Heavy non-volatile triterpenic acids (boswellic acids) and resinic acids.
Only one extraction method captures both meaningfully.
Frankincense Essential Oil: What It Contains?
Frankincense essential oil is obtained by steam distillation of the resin.
Chemical profile:
- Monoterpenes (α-pinene, limonene).
- Sesquiterpenes (incensole, incensole acetate).
What is missing: Boswellic acids (too heavy, non-volatile) and resinic acids.
Cosmetic role:
- Aromatic
- Mild soothing effect
- Limited anti-inflammatory depth
Essential oil is primarily olfactory and sensorial, not structural.
Frankincense CO₂ Extract: A Different Material Entirely
Frankincense CO₂ extract is obtained via supercritical CO₂ extraction, allowing recovery of non-volatile, high-molecular-weight compounds.
Key actives:
- Boswellic acids and resinic acids.
- Acetyl-11-keto-β-boswellic acid (AKBA).
- Triterpenic fractions absent from essential oil.
These compounds are responsible for frankincense’s deep anti-inflammatory and skin-calming activity.
Boswellic Acids Explained
Boswellic acids are pentacyclic triterpenes known for:
- Modulating inflammatory pathways.
- Reducing pro-inflammatory mediators.
- Supporting skin comfort and recovery.
In cosmetics, they act as:
- Potent anti-inflammatory agents.
- Barrier-support actives.
- Skin-calming modulators.
This is why frankincense CO₂ extract is used in dermo-cosmetics, not perfumery.
Stability & Regulatory Advantages
|
|
Oxidative stability | Subjected to high temperatures | Solvent-Free | For Skincare |
| CO₂ extracts | ⭐️⭐️⭐️⭐️⭐️ | No | No | ⭐️⭐️⭐️⭐️⭐️ |
| Essential Oil | ⭐️⭐️⭐️⭐️ | Yes | No | ⭐️⭐️⭐️ |
| Absolute |
⭐️⭐️⭐️⭐️⭐️ |
No | Yes | ⭐️ |
Cosmetic Applications
Frankincense CO₂ extract is suited for:
- Anti-inflammatory creams.
- Sensitive skin formulations.
- Barrier-repair products.
- Post-treatment cosmetics.
- Mature skin care.
Typical use level: 0.05–0.3%.
Essential Oil vs CO₂: Summary:
| Feature | Aroma |
Boswellic acids and resinic acids |
Anti-inflammatory depth |
Cosmetic performance |
| Essential Oil | Strong |
None |
Low |
Sensorial |
| CO₂ Extract | Medium |
Present |
Hight |
Functional |
| Absolute | Strong |
Present |
Hight |
Sensorial and Functional |