HYDROLYZED RICE PROTEIN - Skin Care Ingredients Curated By Mia Seilern

By KimReviewed Nataly

⚠️ Data is provided for informational purposes only. It may contain inaccuracies and should be independently verified. This is not medical advice. Consult a healthcare professional before making health decisions.

Description: HYDROLYZED RICE PROTEIN — hydration, film-forming, skin conditioning.

All Functions: hydration, film-forming, skin conditioning

Quick Facts:

Category: humectant

Proven Benefits At A Glance:

Hydrolyzed Rice Protein is a skin and hair conditioning agent used in cosmetics
Research found it caused no skin irritation, eye irritation, or allergic reactions in animal and human tests
It’s not acutely toxic and showed no phototoxicity concerns in lab studies
Rice-derived ingredients are considered non-allergenic, though isolated cases of raw rice allergy exist
Safety experts concluded hydrolyzed rice protein is safe for cosmetic use at current concentrations

Safety: Generally Low ConcernResearch confidence: Fair

Safety tier is a starting heuristic from regulatory status and comedogenic rating, not a dermatological verdict — see our Terms for the full disclaimer. Research confidence reflects how many real cited studies back this ingredient, not the strength of their findings.

🧪 HYDROLYZED RICE PROTEIN

HYDROLYZED RICE PROTEIN

CAS Number: 156715-40-1

Also Known As: —

Category: humectant

Korean Name: 하이드롤라이즈드쌀단백질

Protein hydrolyzates, rice. Substance obtained by acidic, alkaline, or enzymatic hydrolysis of rice composed primarily of amino acids, peptides, and proteins

HYDROLYZED RICE PROTEIN is a humectant ingredient used in skincare formulations.

hydrationfilm-formingskin conditioning

🌍 Regulatory Status

EU: No restriction on fileUS: No restriction on file

📊 Comedogenicity

No data yet

Not rated for this ingredient yet.

📚 Research & Evidence

PUBMED CITATIONS

Data sources: EU CosIng PubMed

🔬 The Science

Hydrolyzed Rice Protein is a form of rice protein that has been broken down into smaller pieces through a chemical process called hydrolysis, which helps it work better in skincare and haircare products. Here’s what the research shows:

#1: Function and safety profile — Hydrolyzed Rice Protein works as a conditioning agent, meaning it helps soften and smooth skin or hair (Int J Toxicol, 2006). In toxicity testing, rice bran protein hydrolysates (the general category that includes hydrolyzed rice protein) showed no acute toxicity, were not skin irritants, were not eye irritants in animal tests, and were not skin sensitizers in guinea pig allergy tests (Int J Toxicol, 2006).

#2: Human safety data — When tested in actual people, hydrolyzed rice protein showed no irritation or sensitization concerns (Int J Toxicol, 2006). An in vitro phototoxicity assay using UVA light found no photochemical toxicity, meaning sunlight exposure shouldn’t trigger harmful reactions (Int J Toxicol, 2006). #3: Allergenicity — Rice-derived ingredients are generally considered non-allergenic, though the research notes that isolated cases of allergy to raw rice have been reported (Int J Toxicol, 2006). The difference matters: hydrolyzed rice protein is processed differently than raw rice. #4: Regulatory conclusion — The Cosmetic Ingredient Review Expert Panel concluded that hydrolyzed rice protein and similar rice-derived ingredients are safe as cosmetic ingredients at the concentrations currently used in products (Int J Toxicol, 2006).

One limitation worth noting: the sources provided don’t contain detailed clinical studies specifically measuring visible skincare benefits like hydration or wrinkle reduction.