Ingredient review
Poloxamine 504
INCI: Poloxamine 504
A mild synthetic surfactant that helps cleanse without stripping the skin, but offers no active skincare benefits.
In plain English
Poloxamine 504 is a man-made ingredient that helps water and oil mix together in products like cleansers and lotions. It also helps remove dirt and oil from your skin gently, without leaving it feeling tight or dry. Think of it as a helper that makes your cleanser work better while being kind to your 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 504 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 504.
- 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 504 is a synthetic block copolymer made from ethylene oxide and propylene oxide. It belongs to the poloxamine family, which are non-ionic surfactants known for their mildness and ability to stabilize emulsions.
How it works
In a cosmetic product, Poloxamine 504 lowers the surface tension between water and oil, allowing them to blend into a stable mixture. As a surfactant, it helps lift dirt, oil, and makeup from the skin so they can be rinsed away. Its large molecular structure makes it less likely to penetrate the skin, reducing irritation potential.
Pros
Very gentle on skin
Poloxamine 504 is a large molecule that doesn't easily penetrate the skin, making it less likely to cause irritation or stinging, even for sensitive skin types.
Effective emulsifier
It helps keep oil and water mixed in lotions and creams, preventing separation and ensuring a smooth, consistent texture every time you use the product.
Cons and cautions
No active skincare benefits
Unlike ingredients like hyaluronic acid or niacinamide, Poloxamine 504 only helps with cleansing and texture — it doesn't hydrate, brighten, or treat skin concerns.
Synthetic origin
It is made in a lab, which may be a drawback for consumers seeking natural or plant-derived alternatives in their skincare routine.
Best for
- People with normal to combination skin
- Those looking for a mild, non-irritating cleanser
Use caution if
- Those who prefer 100% natural ingredients
- Individuals with very dry or damaged skin may need extra moisturizing alongside
Usage tips
Safety summary
Poloxamine 504 is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, making it suitable for sensitive skin. No significant safety concerns have been raised by regulatory bodies.
Research notes
Research on poloxamines primarily focuses on their use as drug delivery agents and surfactants. In cosmetics, they are well-studied for mildness and safety, with multiple safety reviews supporting their use.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. The Cosmetic Ingredient Review (CIR) panel has deemed poloxamines safe as used in rinse-off and leave-on products.
- Common uses
- Cleansers, Shampoos, Body washes, Lotions
- Environmental note
- Poloxamine 504 is biodegradable and not classified as a persistent environmental pollutant, though it is still a synthetic compound.
Good to know
- Poloxamine 504 is often used in baby shampoos because of its mildness.
- It is biodegradable and considered safe for aquatic life at typical use levels.
Common questions
What is Poloxamine 504 in beauty products?
Poloxamine 504 is a man-made ingredient that helps water and oil mix together in products like cleansers and lotions. It also helps remove dirt and oil from your skin gently, without leaving it feeling tight or dry. Think of it as a helper that makes your cleanser work better while being kind to your skin.
What does Poloxamine 504 do in a beauty product?
In a cosmetic product, Poloxamine 504 lowers the surface tension between water and oil, allowing them to blend into a stable mixture. As a surfactant, it helps lift dirt, oil, and makeup from the skin so they can be rinsed away. Its large molecular structure makes it less likely to penetrate the skin, reducing irritation potential.
Is Poloxamine 504 safe for most people?
Poloxamine 504 is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, making it suitable for sensitive skin. No significant safety concerns have been raised by regulatory bodies.
Who should be careful with Poloxamine 504?
Those who prefer 100% natural ingredients Individuals with very dry or damaged skin may need extra moisturizing alongside
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.