Ingredient review
Polyurethane Crosspolymer-2
INCI: Polyurethane Crosspolymer-2
A synthetic film-former that helps makeup and skincare last longer without feeling heavy.
In plain English
Polyurethane Crosspolymer-2 is a synthetic ingredient that creates a thin, flexible film on your skin. This film helps makeup stay in place longer, makes sunscreens more water-resistant, and gives products a smooth, silky feel. It's like a gentle, invisible shield that doesn't clog pores or cause irritation for most people.
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
Polyurethane Crosspolymer-2 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 Polyurethane Crosspolymer-2.
- 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 high-molecular-weight synthetic polymer made from polyurethane chains that are crosslinked to form a network. It is commonly used in cosmetics as a film former and texture enhancer.
How it works
When applied, the polymer forms a uniform, flexible film on the skin's surface. This film helps other ingredients (like pigments or UV filters) adhere better and last longer. It also imparts a smooth, non-tacky feel and can improve water resistance.
Pros
Long-lasting wear
Helps foundation and eye makeup stay put for hours without smudging or fading.
Lightweight feel
Forms a thin, flexible film that doesn't feel heavy or sticky on the skin.
Cons and cautions
Synthetic origin
Made from petrochemicals, which may be a concern for those seeking natural or eco-friendly products.
Removal difficulty
The film can be stubborn to remove, often requiring an oil-based cleanser or double cleansing.
Best for
- Anyone wanting long-lasting makeup or water-resistant sunscreen
- People with normal to oily skin who prefer a matte finish
Use caution if
- Those who prefer exclusively natural or plant-based ingredients
Usage tips
Safety summary
Polyurethane Crosspolymer-2 has a low irritation and comedogenic risk. It is considered safe for use in cosmetics at typical concentrations. No significant safety concerns have been reported.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that polyurethane crosspolymers are safe for use in cosmetics. Studies show low skin irritation and sensitization potential.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. No concentration restrictions are typically imposed.
- Common uses
- Foundations, Sunscreens, Long-wear makeup, Primers
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in low concentrations and is not known to accumulate in the environment.
Good to know
- Polyurethane Crosspolymer-2 is considered safe by major cosmetic safety panels.
- It is often used in combination with other film-formers for enhanced performance.
Common questions
What is Polyurethane Crosspolymer-2 in beauty products?
Polyurethane Crosspolymer-2 is a synthetic ingredient that creates a thin, flexible film on your skin. This film helps makeup stay in place longer, makes sunscreens more water-resistant, and gives products a smooth, silky feel. It's like a gentle, invisible shield that doesn't clog pores or cause irritation for most people.
What does Polyurethane Crosspolymer-2 do in a beauty product?
When applied, the polymer forms a uniform, flexible film on the skin's surface. This film helps other ingredients (like pigments or UV filters) adhere better and last longer. It also imparts a smooth, non-tacky feel and can improve water resistance.
Is Polyurethane Crosspolymer-2 safe for most people?
Polyurethane Crosspolymer-2 has a low irritation and comedogenic risk. It is considered safe for use in cosmetics at typical concentrations. No significant safety concerns have been reported.
Who should be careful with Polyurethane Crosspolymer-2?
Those who prefer exclusively natural or plant-based 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.