Ingredient review
Poloxamer 108
INCI: Poloxamer 108
Poloxamer 108 is a gentle synthetic ingredient that helps cleansers foam and rinse clean without stripping the skin.
In plain English
Poloxamer 108 is a man-made ingredient that helps oil and water mix together in a product. In cleansers, it creates a light foam and helps lift dirt and makeup from the skin so they can be rinsed away easily. It is considered very mild and is often used in products for sensitive skin because it cleans without leaving the skin feeling tight or dry.
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
Poloxamer 108 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 108.
- 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
Poloxamer 108 is a synthetic block copolymer made from ethylene oxide and propylene oxide. It belongs to the poloxamer family, which are non-ionic surfactants known for their mildness and ability to stabilize emulsions.
How it works
In a cosmetic product, Poloxamer 108 lowers the surface tension between oil and water, allowing them to blend into a stable mixture. When used in a cleanser, it helps water penetrate oily residues on the skin, making it easier to wash away dirt, sebum, and makeup. Its mild nature means it does not disrupt the skin's natural moisture barrier as much as harsher surfactants.
Pros
Very mild on skin
Poloxamer 108 is one of the gentlest surfactants available, making it suitable for sensitive skin and daily use without causing irritation or tightness.
Effective at removing oil
It helps break down sebum and makeup, allowing for thorough cleansing without harsh scrubbing or multiple washes.
Cons and cautions
Synthetic ingredient
It is manufactured from petrochemicals, which may be a concern for consumers seeking natural or plant-based formulations.
Can be drying at high levels
While generally mild, very high concentrations or frequent use may still strip natural oils, especially for already dry skin.
Best for
- People with normal to combination skin
- Those looking for a gentle daily cleanser
Use caution if
- Individuals who strictly avoid synthetic ingredients
- Those with extremely dry or compromised skin barriers may prefer creamier, non-foaming cleansers
Usage tips
Safety summary
Poloxamer 108 is considered safe for use in cosmetics at typical concentrations. It has a low irritation and sensitization potential. Regulatory bodies like the Cosmetic Ingredient Review (CIR) have evaluated poloxamers and found them safe as used.
Research notes
Studies on poloxamers show they are well-tolerated on skin and eyes. Research supports their use as mild surfactants and emulsifiers. Most evidence comes from safety assessments rather than efficacy trials.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US (FDA) and EU (CosIng) with no concentration restrictions for rinse-off products.
- Common uses
- Cleansers, Shampoos, Body washes, Makeup removers
- Environmental note
- Poloxamers are synthetic and not biodegradable in all conditions, but they are generally considered low in toxicity to aquatic life at typical use levels.
Good to know
- Poloxamer 108 is often used in contact lens solutions because of its low irritation profile.
- It is also known as Pluronic L44 in industrial contexts.
Common questions
What is Poloxamer 108 in beauty products?
Poloxamer 108 is a man-made ingredient that helps oil and water mix together in a product. In cleansers, it creates a light foam and helps lift dirt and makeup from the skin so they can be rinsed away easily. It is considered very mild and is often used in products for sensitive skin because it cleans without leaving the skin feeling tight or dry.
What does Poloxamer 108 do in a beauty product?
In a cosmetic product, Poloxamer 108 lowers the surface tension between oil and water, allowing them to blend into a stable mixture. When used in a cleanser, it helps water penetrate oily residues on the skin, making it easier to wash away dirt, sebum, and makeup. Its mild nature means it does not disrupt the skin's natural moisture barrier as much as harsher surfactants.
Is Poloxamer 108 safe for most people?
Poloxamer 108 is considered safe for use in cosmetics at typical concentrations. It has a low irritation and sensitization potential. Regulatory bodies like the Cosmetic Ingredient Review (CIR) have evaluated poloxamers and found them safe as used.
Who should be careful with Poloxamer 108?
Individuals who strictly avoid synthetic ingredients Those with extremely dry or compromised skin barriers may prefer creamier, non-foaming cleansers
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.