Ingredient review
Poloxamer 407
INCI: Poloxamer 407
Poloxamer 407 is a gentle, synthetic emulsifier that helps mix oil and water in skincare products without causing irritation or clogging pores.
In plain English
Poloxamer 407 is a man-made ingredient that acts like a bridge between oil and water. In your skincare, it helps keep the formula smooth and stable, so the product doesn't separate. It's also used to thicken gels and make cleansers foam gently. Because it's very mild, it's often found in products for sensitive skin.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is relatively strong for its common cosmetic role.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- strong
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Poloxamer 407 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 Poloxamer 407.
- 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
strongThere is a stronger practical or research basis for the ingredient role described here.
What it is
Poloxamer 407 is a synthetic block copolymer made from ethylene oxide and propylene oxide. It belongs to a family of surfactants known as poloxamers, which are widely used in cosmetics and pharmaceuticals for their ability to emulsify, solubilize, and stabilize formulations.
How it works
Poloxamer 407 reduces the surface tension between oil and water, allowing them to mix into a stable emulsion. It also forms a gel-like structure at higher concentrations, which can thicken products and provide a smooth, non-greasy feel. In cleansers, it helps lift dirt and oil from the skin without stripping the natural moisture barrier.
Pros
Very gentle on skin
Poloxamer 407 has a low irritation risk, making it suitable for sensitive skin and even eye-area products.
Improves product texture
It gives a smooth, non-greasy feel and helps gels and serums spread evenly without leaving a heavy residue.
Cons and cautions
Synthetic origin
It is a man-made polymer, which may not align with preferences for natural or organic skincare.
Can feel tacky at high levels
In some formulations, especially at higher concentrations, it may leave a slightly sticky or tacky feel on the skin.
Best for
- People with sensitive or reactive skin
- Anyone using lightweight gels or serums
- Those looking for stable, well-mixed products
Use caution if
- Individuals seeking 100% natural or organic formulations
- Those with known allergies to synthetic polymers (rare)
Usage tips
Safety summary
Poloxamer 407 is well-tolerated and has a low risk of irritation or allergic reactions. It is considered safe for use in cosmetics and personal care products at typical levels.
Research notes
Multiple studies confirm the safety and low irritation potential of Poloxamer 407. It is widely used in pharmaceutical formulations and has been reviewed by the Cosmetic Ingredient Review (CIR) panel, which found it safe for cosmetic use.
Common label clues
- Typical concentration
- 0.5% to 5% in leave-on products; up to 20% in rinse-off products
- Regulatory status
- Approved for use in cosmetics and personal care products by the FDA and the European Commission. It is considered safe at typical concentrations.
- Common uses
- Cleansers, Serums, Gels, Masks
- Environmental note
- Poloxamer 407 is synthetic and not biodegradable, but it is used in low concentrations and is not known to accumulate in the environment significantly.
Good to know
- Poloxamer 407 is also used in medical products like contact lens solutions and wound dressings due to its safety profile.
- It is often listed as 'Poloxamer 407' or 'Pluronic F127' on ingredient labels.
Common questions
What is Poloxamer 407 in beauty products?
Poloxamer 407 is a man-made ingredient that acts like a bridge between oil and water. In your skincare, it helps keep the formula smooth and stable, so the product doesn't separate. It's also used to thicken gels and make cleansers foam gently. Because it's very mild, it's often found in products for sensitive skin.
What does Poloxamer 407 do in a beauty product?
Poloxamer 407 reduces the surface tension between oil and water, allowing them to mix into a stable emulsion. It also forms a gel-like structure at higher concentrations, which can thicken products and provide a smooth, non-greasy feel. In cleansers, it helps lift dirt and oil from the skin without stripping the natural moisture barrier.
Is Poloxamer 407 safe for most people?
Poloxamer 407 is well-tolerated and has a low risk of irritation or allergic reactions. It is considered safe for use in cosmetics and personal care products at typical levels.
Who should be careful with Poloxamer 407?
Individuals seeking 100% natural or organic formulations Those with known allergies to synthetic polymers (rare)
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.