Ingredient review
Potassium Cocoyl Hydrolyzed Rice Protein
INCI: POTASSIUM COCOYL HYDROLYZED RICE PROTEIN
A mild, plant-derived surfactant that cleanses effectively while being gentle enough for sensitive skin and daily use.
In plain English
This ingredient is a soap-like molecule made by combining coconut oil fatty acids with broken-down rice proteins. It helps water mix with oil and dirt so they can be rinsed away, but it's much gentler than traditional soaps or harsh detergents. Because the rice protein part is large and moisturizing, it leaves skin feeling soft rather than tight or dry after washing.
Review score
Safety, usefulness, and evidence
Strong fit for many routines
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Easy yes for most routines
Potassium Cocoyl Hydrolyzed Rice Protein is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Potassium Cocoyl Hydrolyzed Rice Protein.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A semi-synthetic surfactant created by reacting coconut fatty acids with hydrolyzed (broken down) rice protein. It belongs to the class of amino acid-based cleansers, which are known for their mildness and compatibility with sensitive skin.
How it works
In a cleanser, this molecule has a water-loving head (from the rice protein) and an oil-loving tail (from the coconut fatty acids). When you lather it with water, it surrounds oil, dirt, and makeup, lifting them off the skin so they can be rinsed away. The rice protein portion also deposits a thin film on the skin, helping to retain moisture and reduce irritation.
Pros
Exceptionally gentle
Unlike sodium lauryl sulfate, this surfactant has a large protein molecule that buffers its cleansing action, making it far less likely to cause irritation or dryness.
Moisturizing feel
The rice protein component deposits a light conditioning film on skin and hair, so you don't need as much moisturizer or conditioner afterward.
Cons and cautions
Lower foam volume
It produces a creamy, low lather rather than big bubbles, which some users associate with less effective cleansing.
Higher cost
Products with this ingredient tend to be pricier because the raw material is more expensive to produce than conventional surfactants.
Best for
- People with dry, sensitive, or eczema-prone skin
- Those who prefer sulfate-free and gentle cleansers
Use caution if
- Individuals looking for a high-foaming, deep-cleansing shampoo for oily scalps
Usage tips
Safety summary
Considered very safe for topical use. The Cosmetic Ingredient Review (CIR) panel has evaluated similar amino acid-based surfactants and found them safe at typical use concentrations. Rare reports of mild irritation in extremely sensitive individuals.
Research notes
Amino acid surfactants like this one have been studied for their mildness and low skin penetration. Research shows they cause significantly less protein denaturation and barrier disruption than traditional anionic surfactants. However, specific clinical studies on potassium cocoyl hydrolyzed rice protein are limited.
Common label clues
- Typical concentration
- 1–10% in rinse-off products
- Regulatory status
- Approved for use in cosmetics globally. No concentration restrictions in rinse-off products per the EU CosIng database and FDA.
- Common uses
- Facial cleansers, Shampoos, Body washes, Baby care products
- Environmental note
- Derived from renewable coconut oil and rice protein. It is readily biodegradable, making it a more eco-friendly choice compared to some petroleum-based surfactants.
Good to know
- This ingredient is often listed near the top of the INCI in sulfate-free cleansers.
- It is compatible with other mild surfactants like cocamidopropyl betaine for improved foam.
Common questions
What is Potassium Cocoyl Hydrolyzed Rice Protein in beauty products?
This ingredient is a soap-like molecule made by combining coconut oil fatty acids with broken-down rice proteins. It helps water mix with oil and dirt so they can be rinsed away, but it's much gentler than traditional soaps or harsh detergents. Because the rice protein part is large and moisturizing, it leaves skin feeling soft rather than tight or dry after washing.
What does Potassium Cocoyl Hydrolyzed Rice Protein do in a beauty product?
In a cleanser, this molecule has a water-loving head (from the rice protein) and an oil-loving tail (from the coconut fatty acids). When you lather it with water, it surrounds oil, dirt, and makeup, lifting them off the skin so they can be rinsed away. The rice protein portion also deposits a thin film on the skin, helping to retain moisture and reduce irritation.
Is Potassium Cocoyl Hydrolyzed Rice Protein safe for most people?
Considered very safe for topical use. The Cosmetic Ingredient Review (CIR) panel has evaluated similar amino acid-based surfactants and found them safe at typical use concentrations. Rare reports of mild irritation in extremely sensitive individuals.
Who should be careful with Potassium Cocoyl Hydrolyzed Rice Protein?
Individuals looking for a high-foaming, deep-cleansing shampoo for oily scalps
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.