Ingredient review
Propylene Glycol Laureth-6
INCI: PROPYLENE GLYCOL LAURETH-6
A gentle synthetic emulsifier that helps mix oil and water in cleansers and lotions, generally well-tolerated by most skin types.
In plain English
Propylene Glycol Laureth-6 is a man-made ingredient that helps oil and water blend together in products like face washes and lotions. It's a type of surfactant, which means it can also help lift dirt and oil from your skin so they rinse away easily. Think of it as a helper that keeps your cleanser smooth and effective without being harsh.
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
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Propylene Glycol Laureth-6 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 Propylene Glycol Laureth-6.
- 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 synthetic compound made by reacting propylene glycol with lauric acid and ethylene oxide. It belongs to the family of ethoxylated surfactants and is used primarily as an emulsifier and cleansing agent.
How it works
It has both water-loving and oil-loving parts, allowing it to surround oil droplets and suspend them in water. This action helps rinse away sebum, makeup, and impurities. In lotions, it keeps the formula stable so water and oil don't separate.
Pros
Gentle cleanser
Effectively removes dirt and oil without stripping the skin's natural moisture barrier, making it suitable for daily use.
Formula stability
Helps maintain a smooth, uniform texture in creams and lotions, preventing separation over time.
Cons and cautions
Manufacturing impurity concern
Trace amounts of 1,4-dioxane can form during production, though reputable brands purify to levels considered safe by regulators.
Not eco-friendly
It is synthetic and not readily biodegradable, which may be a concern for environmentally conscious consumers.
Best for
- People with normal to combination skin looking for a mild cleanser
- Anyone who prefers stable, well-mixed lotions and creams
Use caution if
- Those with known sensitivity to ethoxylated ingredients (rare)
- Individuals seeking 100% natural or fully biodegradable formulas
Usage tips
Safety summary
Considered safe for use in cosmetics at typical concentrations. The main concern is potential contamination with 1,4-dioxane, but reputable manufacturers purify to meet safety limits set by agencies like the FDA and EU.
Research notes
Studies show low skin irritation and sensitization potential. The Cosmetic Ingredient Review (CIR) panel has deemed similar ethoxylated ingredients safe when formulated to minimize impurities.
Common label clues
- Typical concentration
- Usually 1–10% in rinse-off products; lower in leave-on formulas
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database, with concentration limits for leave-on products in some regions.
- Common uses
- Cleansers, Shampoos, Body washes, Lotions
- Environmental note
- Synthetic and not readily biodegradable; may accumulate in aquatic environments if not properly treated in wastewater.
Good to know
- This ingredient is often found in sulfate-free cleansers as a milder alternative to sodium lauryl sulfate
- The '6' in the name refers to the number of ethylene oxide units, which affects its water solubility
Common questions
What is Propylene Glycol Laureth-6 in beauty products?
Propylene Glycol Laureth-6 is a man-made ingredient that helps oil and water blend together in products like face washes and lotions. It's a type of surfactant, which means it can also help lift dirt and oil from your skin so they rinse away easily. Think of it as a helper that keeps your cleanser smooth and effective without being harsh.
What does Propylene Glycol Laureth-6 do in a beauty product?
It has both water-loving and oil-loving parts, allowing it to surround oil droplets and suspend them in water. This action helps rinse away sebum, makeup, and impurities. In lotions, it keeps the formula stable so water and oil don't separate.
Is Propylene Glycol Laureth-6 safe for most people?
Considered safe for use in cosmetics at typical concentrations. The main concern is potential contamination with 1,4-dioxane, but reputable manufacturers purify to meet safety limits set by agencies like the FDA and EU.
Who should be careful with Propylene Glycol Laureth-6?
Those with known sensitivity to ethoxylated ingredients (rare) Individuals seeking 100% natural or fully biodegradable formulas
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.