Science
Mechanism of Action
This ingredient operates through several key pathways within the skin. It functions as an antioxidant by neutralizing free radicals and inhibiting oxygen-promoted reactions, thereby mitigating oxidative damage. As a humectant, it actively attracts and retains moisture within the skin, enhancing hydration and maintaining skin barrier integrity. Its skin conditioning properties help to maintain healthy skin, while its emollient characteristics work to soften and smooth the skin's surface. Furthermore, Hydrolyzed Wheat Bran offers significant anti-aging benefits by inhibiting enzymes such as collagenase, elastase, and hyaluronidase, which are responsible for the breakdown of the skin's vital extracellular matrix components. It also provides a degree of protection against external environmental aggressors and can serve as a UV absorber to enhance the stability of cosmetic formulations themselves.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 In vitro studies at 0.5 mg/mL demonstrated that digested wheat bran samples stimulated macrophage cells (RAW264.7 and THP-1) to release elevated levels of pro-inflammatory cytokines, indicating both immunostimulatory and antioxidant activities.
- 02 Xylo-oligosaccharides (XOS) derived from hard wheat bran exhibited significant hyaluronidase inhibition activity, showing a 49.9% reduction at a concentration of 0.5 mg/mL, suggesting a role in preserving skin's hyaluronic acid content.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Hydrolyzed wheat bran, composed of hydrolyzed proteins and carbohydrates, is generally water-soluble. While specific optimal pH ranges for this ingredient were not explicitly detailed, proteins in general can exhibit varying stability, with some performing optimally at pH values below 5.5 and others showing best stability between pH 5–8. Strong alkaline conditions (above pH 8.5) may induce hydrolysis.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Hydrolyzed Wheat Bran and related hydrolyzed wheat proteins are safe for cosmetic use under specific conditions. Formulations must restrict peptides to an average molecular weight of 3,500 Da or less, or ensure polypeptide lengths do not exceed 30 amino acids (approximately 3.3 kDa). It is imperative that these ingredients are not used on damaged skin, in products that may contact mucous membranes, or in formulations that risk incidental inhalation. Dermal and ocular irritation studies for Hydrolyzed Wheat Protein indicated no significant irritancy. While the FDA generally recognizes peptones, including hydrolyzed proteins, as safe for direct food substances, individuals with diagnosed wheat allergies or celiac disease should exercise caution due to the potential for adverse reactions from trace wheat proteins or gluten contamination. Manufacturers must adhere to good manufacturing practices to limit impurities like heavy metals and pesticide residues.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydrolyzed Wheat Bran is a valuable multi-functional ingredient, offering significant antioxidant, hydrating, and anti-aging benefits suitable for all skin types, provided it is meticulously formulated to comply with specified molecular weight restrictions to ensure safety and efficacy.
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References
Sources