Science
Mechanism of Action
Cedrol exerts its primary actions through antioxidant and anti-inflammatory pathways. It specifically stimulates the production of type I collagen in dermal fibroblasts via the activation of mitogen-activated protein kinase (MAPK) signaling, a crucial process for maintaining skin's structural integrity. Additionally, Cedrol demonstrates immunomodulatory potential by acting as a neutrophil agonist, initiating intracellular Ca2+ mobilization, which can desensitize cells to subsequent inflammatory stimuli. Beyond skin, it has been observed to promote hair growth by stimulating regeneration and prolonging the anagen phase of hair follicles, and exhibits in vitro antiseptic and antifungal activities.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Stimulates the production of type I collagen in dermal fibroblasts through activation of MAPK signaling pathways (concentration not specified for human topical use).
- 02 Effectively promoted hair growth and prevented chemotherapy-induced alopecia by stimulating hair regeneration and prolonging the anagen phase in mice, achieving a mean peak concentration of 16.83 μg ml⁻¹ in mouse skin after cream administration.
- 03 No sensitization reactions observed in human skin sensitization tests at an 8% concentration.
Transparency
Dusting Analysis
Cedrol is not typically considered a 'dusted' ingredient as it provides active benefits. However, its usage concentrations in finished products are subject to restrictions by organizations like IFRA, which vary by product category. These restrictions are primarily due to potential sensitization concerns with the concentrated raw material, guiding formulators to use it within safe, functional limits rather than indicating overuse of an inert ingredient.
The Formula
Formulation
Stability
Cedrol demonstrates stability under normal storage conditions and is compatible with alkaline media, soap bases, waxes, and resins. While pure Cedrol is a solid, it can be found in a viscous liquid form when extracted from cedarwood oil, which has a tendency to crystallize easily. Its pH is described as neutral.
Conflicts
- oxidizing agents
Safety
Safety Profile
Although the Research Institute for Fragrance Materials (RIFM) designates Cedrol as a skin sensitizer with a No Expected Sensitization Induction Level (NESIL) of 2000 µg/cm², patch testing of purified Cedrol indicates minimal irritation or sensitization. Furthermore, an 8% concentration showed no sensitization reactions in human skin tests. Maximum acceptable concentrations in finished products are regulated by IFRA and vary significantly based on the product category. The European Chemicals Agency (ECHA) does not classify Cedrol as hazardous. However, concentrated raw material is described as irritating to eyes, respiratory system, and skin, necessitating appropriate precautions during handling.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Cedrol is a valuable ingredient for precision skincare, offering demonstrable benefits in collagen synthesis, skin conditioning, and anti-inflammatory action, coupled with a favorable safety profile at appropriate concentrations within IFRA guidelines.
Related
Similar Ingredients
Finding similar ingredients…