Ingredient review
Dimethylaminobenzamidopropyl/Methyl Polysilsesquioxane
INCI: DIMETHYLAMINOBENZAMIDOPROPYL/METHYL POLYSILSESQUIOXANE
A silicone polymer that helps makeup and sunscreen stay put without feeling heavy, but it may not suit those who prefer silicone-free routines.
In plain English
This is a type of silicone that forms a thin, flexible film on your skin or hair. Think of it like a clear, breathable raincoat—it helps your makeup last longer, keeps sunscreen from rubbing off, and can make your skin feel smooth and silky. It's not absorbed into the skin; it sits on top and washes off with cleanser.
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
Dimethylaminobenzamidopropyl/Methyl Polysilsesquioxane 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 Dimethylaminobenzamidopropyl/Methyl Polysilsesquioxane.
- 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 (a polysilsesquioxane) modified with a dimethylaminobenzamidopropyl group. It is designed to form a uniform, water-resistant film on surfaces.
How it works
When applied, the polymer chains spread out and link together as the solvent evaporates, creating a continuous, flexible film. This film adheres to the skin or hair, locking in other ingredients and resisting water and friction.
Pros
Long-lasting wear
Creates a durable film that helps makeup and sunscreen stay put for hours, even in humidity or light sweat.
Smooth finish
Gives skin and hair a silky, non-sticky feel without visible residue, making it ideal for primers and setting sprays.
Cons and cautions
Removal can be tricky
Because it forms a water-resistant film, you may need an oil-based cleanser or micellar water to fully remove it, especially from waterproof makeup.
Not biodegradable
As a silicone-based polymer, it is not readily biodegradable and may accumulate in the environment, which is a concern for eco-conscious users.
Best for
- People who want long-lasting makeup or sunscreen
- Those with normal to oily skin who prefer a matte or semi-matte finish
Use caution if
- Anyone strictly avoiding silicones in their routine
- Those with very dry or dehydrated skin who may prefer more emollient ingredients
Usage tips
Safety summary
Generally recognized as safe for topical cosmetic use at typical concentrations. Low irritation and comedogenic potential. No known systemic toxicity from dermal exposure.
Research notes
Safety data is primarily based on analog studies of similar silicone polymers and industry self-assessments. No large-scale human studies are available, but it has a long history of safe use in cosmetics.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Long-wear foundations, Sunscreens, Hair styling products, Primers
- Environmental note
- As a silicone polymer, it is not biodegradable and may persist in water systems. Some manufacturers are exploring bio-based alternatives, but this ingredient remains common in long-wear formulas.
Good to know
- This ingredient is often found in 'transfer-proof' or '24-hour wear' makeup products.
- It is considered safe for most skin types, including sensitive skin, based on current cosmetic ingredient reviews.
Common questions
What is Dimethylaminobenzamidopropyl/Methyl Polysilsesquioxane in beauty products?
This is a type of silicone that forms a thin, flexible film on your skin or hair. Think of it like a clear, breathable raincoat—it helps your makeup last longer, keeps sunscreen from rubbing off, and can make your skin feel smooth and silky. It's not absorbed into the skin; it sits on top and washes off with cleanser.
What does Dimethylaminobenzamidopropyl/Methyl Polysilsesquioxane do in a beauty product?
When applied, the polymer chains spread out and link together as the solvent evaporates, creating a continuous, flexible film. This film adheres to the skin or hair, locking in other ingredients and resisting water and friction.
Is Dimethylaminobenzamidopropyl/Methyl Polysilsesquioxane safe for most people?
Generally recognized as safe for topical cosmetic use at typical concentrations. Low irritation and comedogenic potential. No known systemic toxicity from dermal exposure.
Who should be careful with Dimethylaminobenzamidopropyl/Methyl Polysilsesquioxane?
Anyone strictly avoiding silicones in their routine Those with very dry or dehydrated skin who may prefer more emollient 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.