Science
Mechanism of Action
LAVANDULA ANGUSTIFOLIA OIL acts as a multi-functional agent, primarily through its purifying, astringent, sebum-regulating, and mattifying properties beneficial for managing oily and acne-prone skin by limiting the proliferation of microorganisms such as Staphylococcus aureus and Staphylococcus epidermidis. It exhibits anti-inflammatory effects by reducing pro-inflammatory cytokines like IL-6 and IL-8, potentially via interaction with GABA receptors on skin cells. Furthermore, it supports wound healing by stimulating collagen production and tissue growth, aiding in scar reduction. It also provides antioxidant, moisturizing, antibacterial, antimicrobial, and antifungal activities, helps to unclog pores, reduce redness, and may weakly inhibit tyrosinase to decrease tanning.
Research
Clinical Evidence
Medium confidence0.1%
Key findings
- 01 Demonstrated safety in cell-based experiments and showed concentration-dependent reduction of pro-inflammatory markers (IL-6, IL-8, VEGF) in keratinocyte cell lines.
- 02 Considered acceptable for human skin cells in vitro; however, cytotoxicity was observed at 0.25% in endothelial cells and fibroblasts, and complete cytotoxicity at 1.5% in HaCaT cells.
- 03 Exhibited inhibitory effects against various microorganisms, including E. coli, Bacillus subtilis, Candida mycoderma, and Aspergillus niger, and significantly reduced mixed microbial cells from the skin. Less effective against some bacteria below 0.2% (2000 ppm).
Transparency
Dusting Analysis
LAVANDULA ANGUSTIFOLIA OIL has a narrow window for safe application; in vitro studies indicate cytotoxicity to human skin cells above 0.125%, with observed cell death at 0.25%. Its main components also autoxidize on air exposure, forming potent contact allergens, necessitating careful formulation and concentration control to prevent irritation and sensitization.
The Formula
Formulation
Stability
Its key components, linalyl acetate and linalool, are prone to autoxidation when exposed to air, generating strong contact allergens. Formulations must ensure protection from air to maintain stability and mitigate sensitization risk.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has not formally reviewed Lavender oil for safety in skincare, though it was considered for review. It is FDA-designated as safe for general or limited use in food. A high sensitization risk is noted due to its main components (linalyl acetate and linalool) forming strong contact allergens upon oxidation. In vitro cytotoxicity to human skin cells occurs at concentrations from 0.25%, with acceptable levels up to 0.125%. Limited evidence suggests potential endocrine-disrupting properties, with some studies linking it to prepubertal gynecomastia. Patch testing is strongly advised prior to topical use.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While LAVANDULA ANGUSTIFOLIA OIL offers targeted benefits for oily and acne-prone skin at precise, very low concentrations, its high risk for irritation, sensitization, cytotoxicity, and potential endocrine disruption renders its inclusion in precision skincare questionable.
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