Ingredient review
Bispolyethylene Dimethicone
INCI: Bispolyethylene Dimethicone
A silicone polymer that helps products spread smoothly and resist water, but may not suit those avoiding silicones.
In plain English
Bispolyethylene Dimethicone is a type of silicone that forms a thin, flexible film on your skin. It helps makeup and sunscreen stay put longer and feel silky, but it doesn't absorb into the skin—it sits on top. Think of it like a breathable, invisible shield that also makes the product glide on easily.
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
Bispolyethylene Dimethicone 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 Bispolyethylene Dimethicone.
- 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 synthetic silicone polymer made by combining polyethylene glycol (PEG) with dimethicone. It is a large molecule that does not penetrate the skin.
How it works
When applied, it spreads into an even, water-resistant film that holds other ingredients in place. This improves the wear time of makeup and the water resistance of sunscreens, while also giving a smooth, non-greasy feel.
Pros
Enhances wear time
Creates a flexible film that helps makeup and sunscreen last longer, even in humid or wet conditions.
Improves texture
Gives products a silky, non-greasy feel that glides onto skin without pilling or caking.
Cons and cautions
Silicone-based
Not suitable for those avoiding silicones due to personal preference or environmental concerns.
Potential for buildup
May feel heavy or cause clogged pores on very oily or acne-prone skin if not thoroughly cleansed.
Best for
- Anyone looking for long-wearing makeup or water-resistant sunscreen
- People with normal to dry skin who enjoy a silky, smooth finish
Use caution if
- Those who prefer silicone-free or PEG-free skincare routines
- Individuals with very oily or acne-prone skin who find silicones clogging
Usage tips
Safety summary
Bispolyethylene Dimethicone is considered safe for topical use in cosmetics at typical concentrations. It is non-irritating and non-sensitizing for most people. However, those with very sensitive or acne-prone skin may want to patch test, as some silicones can feel occlusive.
Research notes
The Cosmetic Ingredient Review (CIR) panel has reviewed dimethicone and related polymers and found them safe for cosmetic use. There is limited independent research specifically on Bispolyethylene Dimethicone, but its safety profile is consistent with other dimethicone copolymers.
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 it safe at typical concentrations.
- Common uses
- Sunscreens, Primers, Long-wear foundations, Water-resistant products
- Environmental note
- As a silicone polymer, it is not readily biodegradable and may persist in the environment. Some consumers choose silicone-free alternatives for this reason.
Good to know
- Bispolyethylene Dimethicone is often used in 'water-resistant' sunscreens to help them stay effective during swimming or sweating.
- It is considered safe by the Cosmetic Ingredient Review (CIR) panel at typical use levels.
Common questions
What is Bispolyethylene Dimethicone in beauty products?
Bispolyethylene Dimethicone is a type of silicone that forms a thin, flexible film on your skin. It helps makeup and sunscreen stay put longer and feel silky, but it doesn't absorb into the skin—it sits on top. Think of it like a breathable, invisible shield that also makes the product glide on easily.
What does Bispolyethylene Dimethicone do in a beauty product?
When applied, it spreads into an even, water-resistant film that holds other ingredients in place. This improves the wear time of makeup and the water resistance of sunscreens, while also giving a smooth, non-greasy feel.
Is Bispolyethylene Dimethicone safe for most people?
Bispolyethylene Dimethicone is considered safe for topical use in cosmetics at typical concentrations. It is non-irritating and non-sensitizing for most people. However, those with very sensitive or acne-prone skin may want to patch test, as some silicones can feel occlusive.
Who should be careful with Bispolyethylene Dimethicone?
Those who prefer silicone-free or PEG-free skincare routines Individuals with very oily or acne-prone skin who find silicones clogging
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.