Ingredient review
PEG-50 Hydrogenated Castor Oil Laurate
INCI: PEG-50 HYDROGENATED CASTOR OIL LAURATE
A reliable emulsifier that helps mix water and oil, but may not suit those avoiding ethoxylated ingredients.
In plain English
This ingredient is a helper that lets water and oil blend together in products like lotions and cleansers. It's made by adding ethylene oxide to hydrogenated castor oil and lauric acid, creating a gentle surfactant that also thickens formulas. While generally safe, the PEG (polyethylene glycol) part raises mild concerns for some people due to potential impurities from its manufacturing process.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
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
Useful, but context matters
PEG-50 Hydrogenated Castor Oil Laurate 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 PEG-50 Hydrogenated Castor Oil Laurate.
- 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 compound created by reacting hydrogenated castor oil with lauric acid and ethylene oxide. It belongs to the PEG family of emulsifiers, which are widely used in cosmetics for their ability to stabilize mixtures of oil and water.
How it works
It reduces surface tension between oil and water, allowing them to form a stable emulsion. In cleansers, it helps lift dirt and makeup by surrounding oil particles so they rinse away with water. It also adds a slight thickening effect to formulas.
Pros
Effective emulsifier
Creates smooth, stable lotions and creams that don't separate, improving product texture and shelf life.
Low irritation potential
Generally well-tolerated even on sensitive skin, making it a common choice for gentle cleansers.
Cons and cautions
Ethoxylation concerns
The manufacturing process can leave trace amounts of 1,4-dioxane, a possible carcinogen, though levels are tightly regulated.
Not eco-friendly
PEG compounds are not readily biodegradable and may be derived from palm oil, raising sustainability questions.
Best for
- People looking for gentle, non-stripping cleansers
- Those with normal to combination skin
Use caution if
- Individuals who prefer to avoid PEGs or ethoxylated ingredients
- Those with known sensitivity to castor oil derivatives
Usage tips
Safety summary
Generally recognized as safe at typical cosmetic concentrations. The main concern is trace 1,4-dioxane from ethoxylation, but reputable manufacturers purify to meet regulatory limits. Low irritation and comedogenic risk.
Research notes
Studies confirm PEGs are safe in cosmetics when purified. The Cosmetic Ingredient Review (CIR) panel has reviewed PEG derivatives and found them safe as used. No recent peer-reviewed studies specifically on this compound, but data on similar PEGs supports its safety profile.
Common label clues
- Typical concentration
- 1–5%
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database, with concentration limits for 1,4-dioxane (typically <10 ppm).
- Common uses
- Cleansers, Makeup removers, Lotions, Creams
- Environmental note
- PEG compounds are not readily biodegradable and may persist in water systems. Some sources use palm-derived lauric acid, which can contribute to deforestation if not sustainably sourced.
Good to know
- PEG-50 indicates the average number of ethylene oxide units, affecting solubility and mildness.
- Hydrogenated castor oil is a solid wax that helps thicken formulas.
Common questions
What is PEG-50 Hydrogenated Castor Oil Laurate in beauty products?
This ingredient is a helper that lets water and oil blend together in products like lotions and cleansers. It's made by adding ethylene oxide to hydrogenated castor oil and lauric acid, creating a gentle surfactant that also thickens formulas. While generally safe, the PEG (polyethylene glycol) part raises mild concerns for some people due to potential impurities from its manufacturing process.
What does PEG-50 Hydrogenated Castor Oil Laurate do in a beauty product?
It reduces surface tension between oil and water, allowing them to form a stable emulsion. In cleansers, it helps lift dirt and makeup by surrounding oil particles so they rinse away with water. It also adds a slight thickening effect to formulas.
Is PEG-50 Hydrogenated Castor Oil Laurate safe for most people?
Generally recognized as safe at typical cosmetic concentrations. The main concern is trace 1,4-dioxane from ethoxylation, but reputable manufacturers purify to meet regulatory limits. Low irritation and comedogenic risk.
Who should be careful with PEG-50 Hydrogenated Castor Oil Laurate?
Individuals who prefer to avoid PEGs or ethoxylated ingredients Those with known sensitivity to castor oil derivatives
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.