Ingredient review
Polyurethane-68
INCI: Polyurethane-68
Polyurethane-68 is a synthetic film-former that helps makeup and skincare last longer and feel smoother, with a generally low risk of irritation.
In plain English
Polyurethane-68 is a plastic-like ingredient that creates a thin, flexible film on your skin. This film helps makeup stay put longer, makes sunscreens more water-resistant, and gives products a smooth, silky feel. Think of it like a clear, breathable shield that holds the product in place without feeling heavy or sticky.
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-68 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-68.
- 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
Polyurethane-68 is a synthetic polymer, meaning it's a large molecule made of repeating units. It belongs to the polyurethane family, which are known for their flexibility and durability. In cosmetics, it's used as a film-forming agent to improve the wear and feel of products.
How it works
When applied, Polyurethane-68 forms a thin, flexible film on the skin's surface. This film helps other ingredients (like pigments or UV filters) adhere better and resist rubbing off or washing away. It also gives a smooth, even finish and can help control the texture of a product.
Pros
Long-lasting wear
Helps makeup and sunscreen stay put for hours, reducing the need for touch-ups.
Smooth texture
Gives products a silky, even feel that glides on and doesn't pill or flake.
Cons and cautions
Synthetic origin
Made from petrochemicals, which may be a concern for those seeking natural or eco-friendly options.
Potential tightness
On very dry skin, the film can feel slightly tight or uncomfortable, especially in high concentrations.
Best for
- Anyone wanting long-wearing makeup or water-resistant sunscreen
- People with normal to oily skin who prefer a matte finish
Use caution if
- Those who strictly avoid synthetic ingredients
- Individuals with very dry or dehydrated skin who may find film-formers too tightening
Usage tips
Safety summary
Polyurethane-68 is considered safe for topical use in cosmetics. It has a low irritation and comedogenic risk, making it suitable for most skin types. However, as with any ingredient, patch testing is recommended for sensitive individuals.
Research notes
Research on Polyurethane-68 specifically is limited, but the broader class of polyurethane film-formers is well-studied for cosmetic use. Safety assessments by industry panels have found them to be safe at typical use concentrations.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. No specific concentration limits are imposed, but it is generally used at low levels.
- Common uses
- Long-wear foundations, Waterproof mascara, Sunscreens, Lip products
- Environmental note
- As a synthetic polymer, Polyurethane-68 is not biodegradable. Its environmental impact depends on formulation and disposal methods.
Good to know
- Polyurethane-68 is often used in 'transfer-proof' makeup formulas.
- It is considered safe for use in cosmetics by major regulatory bodies at typical concentrations.
Common questions
What is Polyurethane-68 in beauty products?
Polyurethane-68 is a plastic-like ingredient that creates a thin, flexible film on your skin. This film helps makeup stay put longer, makes sunscreens more water-resistant, and gives products a smooth, silky feel. Think of it like a clear, breathable shield that holds the product in place without feeling heavy or sticky.
What does Polyurethane-68 do in a beauty product?
When applied, Polyurethane-68 forms a thin, flexible film on the skin's surface. This film helps other ingredients (like pigments or UV filters) adhere better and resist rubbing off or washing away. It also gives a smooth, even finish and can help control the texture of a product.
Is Polyurethane-68 safe for most people?
Polyurethane-68 is considered safe for topical use in cosmetics. It has a low irritation and comedogenic risk, making it suitable for most skin types. However, as with any ingredient, patch testing is recommended for sensitive individuals.
Who should be careful with Polyurethane-68?
Those who strictly avoid synthetic ingredients Individuals with very dry or dehydrated skin who may find film-formers too tightening
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.