Ingredient review
Poloxamine 901
INCI: POLOXAMINE 901
Poloxamine 901 is a gentle synthetic ingredient that helps mix oil and water, making it useful in cleansers and lotions without causing irritation.
In plain English
Poloxamine 901 is a man-made molecule that acts like a bridge between oil and water. In skincare, it helps ingredients that normally don't mix (like oils and water) blend together smoothly. It's often used in cleansers to help remove dirt and makeup without stripping the skin, and in lotions to create a stable, creamy texture. Because it's very gentle, it's a good choice for sensitive 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.
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
Poloxamine 901 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 Poloxamine 901.
- 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
Poloxamine 901 is a synthetic block copolymer, meaning it's a large molecule made of repeating units of ethylene oxide and propylene oxide. It belongs to the poloxamine family, which are known for their ability to reduce surface tension and stabilize mixtures.
How it works
In a cosmetic product, Poloxamine 901 works by surrounding oil droplets with its water-loving and oil-loving parts, allowing them to stay suspended in water. This creates a stable emulsion (like a lotion) or helps cleansers lift dirt and oil from the skin so they can be rinsed away easily.
Pros
Very gentle on skin
Poloxamine 901 has a low irritation risk, making it suitable for sensitive skin types and daily use without causing redness or dryness.
Effective emulsifier
It helps oil and water mix smoothly, which improves the texture and stability of lotions, creams, and cleansers, so they feel consistent every time you use them.
Cons and cautions
Synthetic origin
Poloxamine 901 is man-made, which may be a drawback for consumers who prefer naturally derived ingredients in their skincare routine.
Limited long-term data
While generally considered safe, there is less long-term research on this specific ingredient compared to more common emulsifiers like lecithin or glycerin.
Best for
- People with sensitive or reactive skin looking for a gentle cleanser
- Anyone using lotions or creams that need a stable, non-separating texture
Use caution if
- Those seeking 100% natural or organic skincare ingredients
Usage tips
Safety summary
Poloxamine 901 is considered safe for cosmetic use with low irritation and comedogenic risk. It is well-tolerated by most skin types, including sensitive skin. As with any ingredient, patch testing is recommended for new users.
Research notes
Research on poloxamines, including Poloxamine 901, focuses on their surfactant and emulsifying properties. They are widely used in pharmaceuticals and cosmetics, with a good safety profile. However, specific studies on long-term skin effects are limited.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. It is listed on the CosIng database and considered safe at typical concentrations.
- Common uses
- Cleansers, Shampoos, Body washes, Lotions
- Environmental note
- Poloxamine 901 is not readily biodegradable, so it may persist in water systems. However, it is used in low concentrations and is not known to bioaccumulate.
Good to know
- Poloxamine 901 is often used in baby shampoos because of its mildness.
- It can also help disperse pigments in makeup products.
Common questions
What is Poloxamine 901 in beauty products?
Poloxamine 901 is a man-made molecule that acts like a bridge between oil and water. In skincare, it helps ingredients that normally don't mix (like oils and water) blend together smoothly. It's often used in cleansers to help remove dirt and makeup without stripping the skin, and in lotions to create a stable, creamy texture. Because it's very gentle, it's a good choice for sensitive skin.
What does Poloxamine 901 do in a beauty product?
In a cosmetic product, Poloxamine 901 works by surrounding oil droplets with its water-loving and oil-loving parts, allowing them to stay suspended in water. This creates a stable emulsion (like a lotion) or helps cleansers lift dirt and oil from the skin so they can be rinsed away easily.
Is Poloxamine 901 safe for most people?
Poloxamine 901 is considered safe for cosmetic use with low irritation and comedogenic risk. It is well-tolerated by most skin types, including sensitive skin. As with any ingredient, patch testing is recommended for new users.
Who should be careful with Poloxamine 901?
Those seeking 100% natural or organic skincare ingredients
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.