Ingredient review
Dimethicone Crosspolymer
INCI: Dimethicone Crosspolymer
A gentle silicone that gives a smooth, matte finish without clogging pores — great for oily or combination skin.
In plain English
Dimethicone crosspolymer is a type of silicone that has been chemically linked into a larger, powder-like structure. Unlike liquid silicones, it doesn't feel slippery or greasy. Instead, it creates a soft, velvety film on the skin that helps blur pores and fine lines, controls shine, and makes makeup apply more evenly. It's often used in primers and mattifying products because it gives a silky, non-sticky finish.
Review score
Safety, usefulness, and evidence
Strong fit for many routines
The evidence base is relatively strong for its common cosmetic role.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- strong
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Easy yes for most routines
Dimethicone Crosspolymer 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 Dimethicone Crosspolymer.
- 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
strongThere is a stronger practical or research basis for the ingredient role described here.
What it is
A synthetic silicone polymer made by crosslinking dimethicone molecules into a three-dimensional network. This creates a soft, powder-like substance that is insoluble in water and oil.
How it works
When applied, it forms a thin, breathable film on the skin's surface. This film smooths out uneven texture, absorbs excess oil, and helps other ingredients (like pigments in foundation) spread evenly. It also helps reduce the greasy feel of heavier oils and emollients.
Pros
Velvety, non-greasy feel
Unlike liquid silicones, dimethicone crosspolymer leaves a soft, powder-like finish that reduces shine without making skin feel dry or tight.
Makeup-friendly texture
It helps foundation and concealer glide on smoothly and stay in place longer, making it a favorite in primers and long-wear cosmetics.
Cons and cautions
Environmental persistence
As a synthetic silicone, it is not readily biodegradable and can accumulate in waterways, which is a concern for eco-conscious consumers.
May feel heavy in high amounts
In products with very high concentrations, some people with extremely oily skin may notice a slight film or buildup, especially if layered under other silicones.
Best for
- People with oily or combination skin who want a matte finish
- Anyone looking for a primer or makeup base that smooths skin texture
Use caution if
- Those who prefer entirely silicone-free or biodegradable formulations
Usage tips
Safety summary
Dimethicone crosspolymer is considered very safe for topical use. It has low irritation and comedogenic potential, making it suitable for most skin types, including sensitive and acne-prone skin.
Research notes
Multiple safety reviews by the Cosmetic Ingredient Review (CIR) panel have confirmed the safety of dimethicone crosspolymer in cosmetics. No significant skin irritation or sensitization has been reported in clinical studies.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics worldwide. The Cosmetic Ingredient Review (CIR) panel has concluded that dimethicone crosspolymer is safe as used in cosmetic formulations.
- Common uses
- Primers, Moisturizers, Sunscreens, Foundations, Hair conditioners
- Environmental note
- Silicones like dimethicone crosspolymer are not biodegradable and may contribute to environmental accumulation. Some manufacturers are exploring bio-based alternatives to reduce ecological impact.
Good to know
- Dimethicone crosspolymer is often listed near the top of ingredient lists in primers and mattifying moisturizers because it is used at moderate concentrations.
- It is considered safe by major regulatory bodies, including the Cosmetic Ingredient Review (CIR) panel.
Common questions
What is Dimethicone Crosspolymer in beauty products?
Dimethicone crosspolymer is a type of silicone that has been chemically linked into a larger, powder-like structure. Unlike liquid silicones, it doesn't feel slippery or greasy. Instead, it creates a soft, velvety film on the skin that helps blur pores and fine lines, controls shine, and makes makeup apply more evenly. It's often used in primers and mattifying products because it gives a silky, non-sticky finish.
What does Dimethicone Crosspolymer do in a beauty product?
When applied, it forms a thin, breathable film on the skin's surface. This film smooths out uneven texture, absorbs excess oil, and helps other ingredients (like pigments in foundation) spread evenly. It also helps reduce the greasy feel of heavier oils and emollients.
Is Dimethicone Crosspolymer safe for most people?
Dimethicone crosspolymer is considered very safe for topical use. It has low irritation and comedogenic potential, making it suitable for most skin types, including sensitive and acne-prone skin.
Who should be careful with Dimethicone Crosspolymer?
Those who prefer entirely silicone-free or biodegradable formulations
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.