Ingredient review
PEG-5 Soyamine
INCI: PEG-5 SOYAMINE
PEG-5 Soyamine is an effective emulsifier and cleanser, but may be irritating for sensitive skin and has moderate comedogenic potential.
In plain English
PEG-5 Soyamine is a semi-synthetic ingredient made by adding ethylene oxide to soyamine, a compound from soybean oil. It helps oil and water mix together in products like cleansers and shampoos, and also helps remove dirt and oil from skin and hair. Because it can be slightly irritating and may clog pores, it's best suited for normal to oily skin types and should be used with caution on sensitive or acne-prone skin.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Main practical flags: irritation is moderate; clogging risk is moderate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- moderate
Quick decision guide
Useful, but context matters
PEG-5 Soyamine can be useful, but watch for some irritation potential and possible clogging concerns.
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 PEG-5 Soyamine.
- 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
Clogging risk
moderateMay be fine for many users but deserves caution if you are breakout-prone.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
PEG-5 Soyamine is a polyethylene glycol (PEG) derivative of soyamine, a fatty amine from soybean oil. It acts as a surfactant and emulsifier, meaning it reduces surface tension between oil and water, allowing them to blend into a stable product.
How it works
In a cosmetic product, PEG-5 Soyamine works by surrounding oil droplets and dirt particles, allowing them to be rinsed away with water. It also helps stabilize emulsions (mixtures of oil and water) so the product stays uniform and doesn't separate.
Pros
Effective cleanser
PEG-5 Soyamine efficiently removes excess oil, dirt, and makeup from skin and hair, making it a good choice for deep cleansing products.
Stabilizes formulas
As an emulsifier, it helps keep oil and water mixed, ensuring your product stays smooth and effective throughout its shelf life.
Cons and cautions
Potential irritation
This ingredient can cause stinging or redness, especially on sensitive, dry, or damaged skin. It's best used in rinse-off products to minimize contact time.
May clog pores
With a moderate comedogenic rating, it may contribute to breakouts for those prone to acne. Consider patch testing on the jawline before full use.
Best for
- People with normal to oily skin looking for effective cleansers
- Those using rinse-off products like shampoos and body washes
Use caution if
- Individuals with sensitive, reactive, or acne-prone skin should patch test first or choose gentler alternatives
Usage tips
Safety summary
PEG-5 Soyamine is considered safe for use in rinse-off cosmetics at typical concentrations. However, it may cause mild to moderate irritation in sensitive individuals and has a moderate comedogenic potential. Avoid contact with eyes and broken skin.
Research notes
Studies on PEG-5 Soyamine are limited, but related PEG surfactants have been reviewed by safety panels (e.g., CIR) and found safe for cosmetic use when formulated properly. Its irritation potential is higher than some gentler alternatives.
Common label clues
- Typical concentration
- Typically 0.5% to 5% of the formula
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions, subject to concentration limits and purity standards.
- Common uses
- Cleansers, Shampoos, Conditioners, Facial Washes
- Environmental note
- Derived from soybean oil, a renewable resource, but the ethoxylation process may involve ethylene oxide, which is produced from fossil fuels.
Good to know
- PEG-5 Soyamine is often found in combination with other surfactants to create a balanced cleansing experience.
- The 'PEG-5' indicates the number of ethylene oxide units added, which affects its water solubility and mildness.
Common questions
What is PEG-5 Soyamine in beauty products?
PEG-5 Soyamine is a semi-synthetic ingredient made by adding ethylene oxide to soyamine, a compound from soybean oil. It helps oil and water mix together in products like cleansers and shampoos, and also helps remove dirt and oil from skin and hair. Because it can be slightly irritating and may clog pores, it's best suited for normal to oily skin types and should be used with caution on sensitive or acne-prone skin.
What does PEG-5 Soyamine do in a beauty product?
In a cosmetic product, PEG-5 Soyamine works by surrounding oil droplets and dirt particles, allowing them to be rinsed away with water. It also helps stabilize emulsions (mixtures of oil and water) so the product stays uniform and doesn't separate.
Is PEG-5 Soyamine safe for most people?
PEG-5 Soyamine is considered safe for use in rinse-off cosmetics at typical concentrations. However, it may cause mild to moderate irritation in sensitive individuals and has a moderate comedogenic potential. Avoid contact with eyes and broken skin.
Who should be careful with PEG-5 Soyamine?
Individuals with sensitive, reactive, or acne-prone skin should patch test first or choose gentler alternatives
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.