Science
Mechanism of Action
This amphoteric compound primarily functions as an astringent, antimicrobial, and film-forming agent. It acts as a protective coating for mineral UV filters and pigments, preventing photocatalytic activity and reducing trans-epidermal water loss.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Studies show that related aluminum-oxide scaffolds (boehmite) can significantly reduce irritancy and enhance stability when used as carriers for active peptides at 0.1-1.5%.
- 02 In-vitro tests indicate boehmite nanoparticles in dermal delivery systems may trigger innate immune responses, though this effect is generally considered negligible in topical cosmetic applications.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient is amphoteric, dissolving in highly acidic (pH < 4) or highly alkaline (pH > 10) conditions. It maintains optimal stability and minimizes aggregation within a neutral pH range.
Conflicts
- strong acids
- strong alkalis
- certain anionic surfactants
Safety
Safety Profile
CIR and SCCS assessments affirm the safety of aluminum compounds in leave-on cosmetic products, with restrictions primarily for inhalable forms like sprays or powders.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Aluminum Hydroxide Oxide is a valuable, versatile ingredient that enhances product stability, offers protective benefits, and is well-tolerated across all skin types.
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References
Sources