Science
Mechanism of Action
Cetearyl Stearate acts as an occlusive conditioning agent by forming a breathable, hydrophobic film over the stratum corneum. This physical barrier effectively traps moisture and reduces transepidermal water loss (TEWL) while simultaneously stabilizing emulsions to ensure an even distribution of active ingredients across the skin surface.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 A 4-week clinical use test involving 40 participants confirmed zero adverse reactions, highlighting excellent cutaneous tolerance.
- 02 Human patch testing on 105 subjects categorized the ingredient as non-to-minimally irritating at a 1% concentration.
- 03 Dermatological assessments of undiluted (100%) material yielded a Primary Irritation Index of 0.0, indicating high safety margins.
Transparency
Dusting Analysis
As a functional texture enhancer and emollient, it is rarely 'dusted' for marketing purposes; its presence usually indicates a deliberate formulation choice for viscosity and barrier support.
The Formula
Formulation
Stability
Highly stable across standard cosmetic pH ranges. Requires heating to 70-75°C during the oil-phase integration for proper emulsification.
Synergies
- Lipophilic actives
- Other waxy esters
- Humectants
Conflicts
- Strong oxidizing agents
- Highly alkaline environments
Safety
Safety Profile
The CIR Expert Panel supports its safety in leave-on products up to a 5% concentration, provided the final formulation is non-irritating.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An excellent, low-hazard emollient that provides essential barrier protection and sophisticated texture for dry and sensitive skin profiles.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources