Ingredient review
PCA Dimethicone Crosspolymer
INCI: PCA Dimethicone/Bis-Vinyldimethicone Crosspolymer
A silicone powder that gives a silky, blurring finish and helps control shine without clogging pores.
In plain English
This is a silicone-based ingredient that feels like a fine, silky powder. It spreads easily on the skin, creating a smooth, velvety layer that helps makeup stay in place and reduces the look of pores and fine lines. It also absorbs excess oil, making it great for people with oily or combination skin.
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
PCA 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 PCA 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
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic silicone polymer that forms a flexible, breathable film on the skin. It is a crosspolymer, meaning its molecules are linked together in a network, which gives it a powder-like texture and oil-absorbing properties.
How it works
When applied, it leaves a thin, invisible film that smooths the skin's surface. The crosslinked structure traps and holds excess sebum (skin oil), reducing shine throughout the day. It also helps other ingredients spread evenly and improves the feel of a product.
Pros
Oil control without drying
Absorbs excess sebum on the skin's surface, helping to reduce shine for hours without stripping moisture.
Smooth, blurring finish
Creates a soft-focus effect that minimizes the appearance of pores and fine lines, giving skin a more even texture.
Cons and cautions
May feel too matte for dry skin
If you have dry or dehydrated skin, this ingredient can make your complexion look flat or feel tight.
Requires double cleansing
As a silicone, it can be resistant to water-based cleansers alone; an oil-based cleanser or micellar water may be needed for thorough removal.
Best for
- People with oily or combination skin looking for shine control
- Anyone who wants a smooth, pore-blurring makeup base
Use caution if
- Those with very dry or dehydrated skin who prefer a dewy finish
Usage tips
Safety summary
PCA Dimethicone Crosspolymer is considered safe for use in cosmetics. It has a low irritation and comedogenic rating, making it suitable for most skin types. No significant safety concerns have been reported in scientific literature.
Research notes
Research on this specific crosspolymer is limited, but silicones in general have a long history of safe use in cosmetics. Studies show they do not penetrate the skin and are well-tolerated. The Cosmetic Ingredient Review (CIR) panel has deemed similar dimethicone crosspolymers safe as used.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics globally; no known restrictions in the EU, US, or Asia.
- Common uses
- Primers, Foundations, Sunscreens, Moisturizers, Powders
- Environmental note
- As a silicone, it may not be biodegradable. However, it is not classified as a microplastic and is generally considered low-risk for aquatic environments.
Good to know
- This ingredient is often used in powder foundations and setting powders for its silky feel.
- It is considered non-comedogenic and safe for most skin types.
Common questions
What is PCA Dimethicone Crosspolymer in beauty products?
This is a silicone-based ingredient that feels like a fine, silky powder. It spreads easily on the skin, creating a smooth, velvety layer that helps makeup stay in place and reduces the look of pores and fine lines. It also absorbs excess oil, making it great for people with oily or combination skin.
What does PCA Dimethicone Crosspolymer do in a beauty product?
When applied, it leaves a thin, invisible film that smooths the skin's surface. The crosslinked structure traps and holds excess sebum (skin oil), reducing shine throughout the day. It also helps other ingredients spread evenly and improves the feel of a product.
Is PCA Dimethicone Crosspolymer safe for most people?
PCA Dimethicone Crosspolymer is considered safe for use in cosmetics. It has a low irritation and comedogenic rating, making it suitable for most skin types. No significant safety concerns have been reported in scientific literature.
Who should be careful with PCA Dimethicone Crosspolymer?
Those with very dry or dehydrated skin who prefer a dewy finish
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.