ARABINOXYLAN
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A plant-derived hemicellulose polysaccharide — found in the cell walls of grains like wheat and rice — that forms a invisible, breathable film on skin for a smoother, more resilient barrier.
Arabinoxylan is a hemicellulose polysaccharide abundant in the primary cell walls of monocotyledonous plants, particularly cereal grains including wheat, rice, barley, and corn. It consists of a backbone of beta-1,4-linked xylose residues with substitutions of arabinose side chains and ferulic acid ester groups. The arabinose:xylose (A/X) ratio determines solubility and functionality — higher arabinose substitution improves water solubility. The ferulic acid ester linkages allow arabinoxylans to form covalent cross-links through peroxidase-mediated dimerization, which can strengthen the film-forming network on skin. On the skin surface, arabinoxylan creates a thin, flexible, oxygen-permeable film that reduces friction, improves texture, and can reduce water loss. It is also known as xyloarabinan per the CosIng description.
Function
Skin benefits
- Film-forming reduces skin friction and improves smoothness
- Supports skin barrier by reducing transepidermal water loss
- Can enhance delivery of other active ingredients
- Provides a light, breathable protective layer
Known concerns
- Grain-derived — potential allergen for individuals with cereal grain allergies
- May be contaminated with gluten if sourced from wheat — relevant for celiac-affected consumers
- Limited data on long-term repeated exposure safety
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.