Lavandula angustifolia (Lavender) flower/leaf/stem juice: properties, uses, pros, cons, safety
(Lavandula angustifolia; Lamiaceae)
Lavandula angustifolia flower/leaf/stem juice is a plant juice (“vegetable sap/juice”) obtained from the flowers, leaves, and stems of true lavender. In cosmetics it is mainly used as a supporting ingredient in botanical-positioned formulations, with frequent use in oral care products and, more broadly, where a sensory contribution consistent with the plant raw material is desired.
Definition
It is a variable-composition mixture, not attributable to a single molecule. Composition depends on the origin and quality of the raw material, the method used to obtain the juice (pressing/extraction), any filtration and stabilization steps, and the producer’s specifications.
From a formulation standpoint, operational parameters include: odor, color, clarity/haze, preservative compatibility, and microbiological robustness (an aqueous or high water-activity raw material, typically more microbiologically “sensitive”).
Main uses
Cosmetics.
Used in toothpastes, mouthwashes, and oral care products, as well as in lotions, gels, and “botanical” cleansers. In European cosmetic repertories, this specific entry is mainly associated with flavouring, fragrance, and oral care functions; some classifications also indicate skin conditioning.
INCI Functions
Flavoring agent. The purpose of this ingredient is to modify the solution to add flavour. Natural flavouring extracts are rather expensive, so the cosmetic and pharmaceutical industries resort to synthesised substances that have sensory characteristics mostly similar to natural flavourings or are naturally equivalent. This ingredient is isolated through chemical processes or is synthesised from chemicals. It is also referred to as Aroma.
Fragrance. It plays a very important role in the formulation of cosmetic products as it allows perfume to be enhanced, masked or added to the final product, improving its commercial viability. The consumer always expects to find a pleasant scent in a cosmetic product.
Oral care agent. This ingredient can be placed in the oral cavity to improve and/or maintain oral hygiene and health, to prevent or improve a disorder of the teeth, gums, mucous membrane.
Skin conditioning agent. It is the mainstay of topical skin treatment by restoring, increasing or improving skin tolerance to external factors, including melanocyte tolerance. The most important function of the conditioning agent is to prevent skin dehydration, but the subject is rather complex and involves emollients and humectants.
Medicine.
In traditional medicine lavender is used as a medical plant in the treatment of inflammation, depression and stress, due to its sedative and anxiolytic action, thrombotic and antimicrobial properties.
Cultivation
The reference plant is Lavandula angustifolia (Lamiaceae), cultivated in temperate regions. For a “flower/leaf/stem juice”, agronomic variability and the harvest window can affect aromatic fingerprint and organoleptic characteristics; in industrial practice this is managed through specifications, acceptance criteria, and, when available, supplier standardization.
For more information: LAVENDER
Key constituents
Composition is process-dependent. In practical terms, the “juice” may contain water-soluble fractions of the plant matrix (for example sugars/oligosaccharides, organic acids, amino acids, and other polar components) and traces of odor-active components consistent with lavender, at variable levels.
Operationally, formulators mainly focus on: organoleptic profile, stability over time, the grade’s microbiological requirements, and compatibility with the matrix (preservative, electrolytes, polymers, surfactants).
Nutritional use note and bioactive compounds
In a cosmetic context it is not a “nutritional” ingredient. Technical interest relates to sensory performance, formulation compatibility, and quality management. Any references to “bioactivity” should be interpreted cautiously and, if linked to claims, require evidence at the finished-product level.
Identification data and specifications
| Characteristic | Value |
|---|---|
| INCI name | Lavandula angustifolia flower/leaf/stem juice |
| INCI functions | flavouring; fragrance; oral care (sometimes also skin conditioning) |
| CAS number | 90063-37-9 and/or 84776-65-8 (depending on repertory/supplier; verify grade SDS) |
| EC/EINECS number | 289-995-2 and/or 283-994-0 (depending on repertory/supplier; verify grade SDS) |
| Botanical family | Lamiaceae |
| Substance type | Variable-composition plant juice (mixture) |
| Molecular formula | Not applicable (mixture) |
| Molecular weight | Not applicable as a single value (mixture) |
| Typical preparation | Plant juice/vegetable sap (“vegetable sap”) |
| Typical commercial appearance | Aqueous liquid or carrier-based (grade-dependent) |
Indicative physico-chemical properties
| Characteristic | Indicative value | Note |
|---|---|---|
| Chemical nature | Aqueous mixture with polar plant-matrix fractions | Depends on raw material and process |
| Solubility | Generally compatible with aqueous phases | Depends on any carrier and the matrix |
| pH stability | Matrix-dependent | Extreme pH may affect appearance and odor |
| Light/oxygen stability | Variable | Possible organoleptic drift over time |
| Thermal stability | Sensitive to prolonged stress | Prefer controlled-temperature addition when possible |
| Critical parameters | Odor, color, haze, microbial load, storage | Main drivers for repeatability and safety |
Functional role and practical mechanism of action
The role is mainly sensory (flavour/fragrance) and supports the botanical positioning of the formula. In oral care, use is driven by flavouring objectives and by strict stability and safety requirements for the finished product. Performance depends on dose, matrix interactions, and microbiological stability throughout shelf life.
Formulation compatibility
Common points of attention include preservative-system compatibility (critical for “juice” raw materials), risk of haze in the presence of electrolytes or specific polymers, control of odor/color in “clear” formulas, and management of batch-to-batch variability. For oral care and leave-on products, it is recommended to set stricter microbiological and acceptance criteria consistent with target population and use area.
Use guidelines
Use levels depend on the grade and objective. Good practice is to define targets for odor, color, and clarity, validate through accelerated stability and final-packaging tests, and set tolerances and batch acceptance criteria. In oral care, include product-specific checks on taste, stability, and compatibility with functional systems (fluorides, abrasives, surfactants, polymers).
Quality, grades, and specifications
Supplier variability can be significant. Robust control includes: organoleptic specifications, microbiological limits, storage and shelf-life guidance, and traceability. Adoption of GMP (good manufacturing practice; benefit: improves traceability and reduces contamination/variability) is a positive indicator, particularly for “juice” raw materials.
Safety, regulatory, and environment
Safety must be assessed on the finished product considering concentration, exposure area, and target population. For a “juice”, the most relevant operational aspects include microbiological quality, impurity control, and consistency of supplier specifications, especially in oral care products.
Allergen.
It is not typically classified as an “allergen” per se; however, as a botanical raw material it may contain potentially sensitizing components in predisposed individuals and, if relevant odor-active constituents are present, assessment should be tied to supplier specifications and the finished-product level.
Contraindications (brief).
Use caution on very sensitive or reactive skin and on delicate areas; in oral care, comply with finished-product safety/tolerability requirements. Avoid use on compromised skin if risk assessment and testing indicate concerns.
Formulation troubleshooting
Microbiological instability or “off-odor” over time.
Action: tighten acceptance criteria (micro and organoleptic), verify preservative robustness in the matrix, improve bulk handling, and select a more controlled grade.
Haze/precipitation in formula.
Action: verify compatibility with polymers/electrolytes, optimize order of addition and pH, evaluate a more filtered grade or a different carrier.
Perceptible batch-to-batch variability.
Action: set tighter specifications (odor/color/haze), implement incoming controls, and agree on standardization strategies with the supplier.
Conclusion
Lavandula angustifolia flower/leaf/stem juice is a true lavender plant juice used in cosmetics mainly for flavouring/fragrance functions and particularly in oral care. Reliable use requires quality control (organoleptic and microbiological), variability management, matrix compatibility, and finished-product safety assessment, including a concise note on sensitization potential and operational contraindications.
Mini-glossary
UVCB. Substances of unknown or variable composition, complex reaction products, or biological materials.
Juice/vegetable sap. Plant juice obtained from plant parts; variable composition and often microbiologically sensitive.
GMP. Good manufacturing practice; benefit: improves traceability and reduces contamination/variability.
