What it is
In the register’s words: “Protein hydrolyzates, rice. Substance obtained by acidic, alkaline, or enzymatic hydrolysis of rice composed primarily of amino acids, peptides, and proteins.”
- EU register name (INCI)
- HYDROLYZED RICE PROTEIN
- CAS number
- 156715-40-1
What the register lists it for
These are the uses the European Commission’s CosIng register lists for Hydrolyzed Rice Protein in any cosmetic, hair roles first. They say why a maker might add it, not what it does in one formula, and they aren’t a safety rating.
- Hair conditioning
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The register’s hair role for ingredients that make hair feel softer, smoother or easier to comb. Most conditioners, masks and leave-ins list several.
Register definition: “Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.”
- Antistatic
-
Cuts the static that makes dry hair fly away. Many conditioning ingredients carry this role too, because both work at the hair’s surface.
Register definition: “Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.”
- Skin conditioning
-
The register’s broad role for ingredients that keep skin in good condition. On a hair label it often sits beside a hair role, or marks a plant oil or extract.
Register definition: “Maintaining the skin in good condition.”
Where it sits on each label
US labels list ingredients from most to least, except that those at 1% or less may follow in any order. A name near the top is a large part of the formula. A label doesn’t mark where the 1% point falls, so further down, the order says little about how much is in it.
- Shampoos 2 labels First five names: 0 of 2 Shampoos without it
- Clarifying shampoos 1 label First five names: 0 of 1 Clarifying shampoos without it
- Rinse-out conditioners 2 labels First five names: 0 of 2 Rinse-out conditioners without it
- Deep conditioners 1 label First five names: 0 of 1 Deep conditioners without it
- Leave-in conditioners 2 labels First five names: 0 of 2 Leave-in conditioners without it
- Protein treatments 2 labels First five names: 0 of 2 Protein treatments without it
Every label, product by product (10)
- SheaMoisture Jamaican Black Castor Oil Strengthen & Restore Shampoo Shampoo 8th of 27 names
- Innersense Organic Beauty Hydrating Cream Hairbath Shampoo 27th of 35 names
- Ouidad Water Works Clarifying Shampoo Clarifying shampoo 6th of 33 names
- SheaMoisture Jamaican Black Castor Oil Strengthen & Restore Conditioner Rinse-out conditioner 17th of 29 names
- Innersense Organic Beauty Hydrating Cream Conditioner Rinse-out conditioner 27th of 38 names
- SheaMoisture Manuka Honey & Mafura Oil Intensive Hydration Masque Deep conditioner 15th of 23 names
- SheaMoisture Coconut & Hibiscus Hold & Shine Moisture Mist Leave-in conditioner 18th of 25 names
- SheaMoisture Jamaican Black Castor Oil Strengthen & Restore Leave-In Conditioner Leave-in conditioner 23rd of 28 names
- Cécred Reconstructing Treatment Mask Protein treatment 6th of 37 names
- Briogeo Don't Despair, Repair! MegaStrength+ Rice Water Protein + Moisture Strengthening Treatment Protein treatment · listed as Hydrolyzed Rice Protein* 8th of 35 names
Each line runs from the first name on a label to the last; a dot is where this ingredient sits. Makers change formulas now and then; if the list on your bottle differs, go by your bottle.
Your next step
Other hair conditioning ingredients on these labels
- Glycerin 131 labels
- Panthenol 72 labels
- Cocos Nucifera (Coconut) Oil 69 labels
- Behentrimonium Methosulfate 38 labels
- Caprylyl Glycol 37 labels
- Behentrimonium Chloride 34 labels
- Cocamidopropyl Betaine 34 labels
- Simmondsia Chinensis (Jojoba) Seed Oil 34 labels
Updated · The name, numbers and uses come from the European Commission’s CosIng entry (CC BY 4.0); we write the uses in US spelling and put the hair ones first. The labels are each maker’s own. The order rule is the FDA’s Cosmetics Labeling Guide. All our sources are on the Sources page.