Ingredient review
Polysilicone-15
INCI: Polysilicone-15
Polysilicone-15 is a safe, non-irritating silicone that helps sunscreen stay on your skin longer and feel lighter.
In plain English
Polysilicone-15 is a type of silicone that forms a thin, flexible film on your skin. In sunscreens, it helps the product spread evenly and stay put even when you sweat or go in the water. It also makes the sunscreen feel less greasy and more comfortable to wear.
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
Polysilicone-15 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 Polysilicone-15.
- 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
Polysilicone-15 is a synthetic silicone polymer that acts as a film former and UV filter. It is often used in sunscreens to enhance water resistance and improve the sensory feel of the product.
How it works
When applied to the skin, Polysilicone-15 forms a uniform, water-resistant film that helps other sunscreen ingredients stay in place. It also has mild UV-absorbing properties, contributing to the overall sun protection factor (SPF).
Pros
Boosts water resistance
Helps sunscreen stay effective longer during swimming or sweating, reducing the need for frequent reapplication.
Improves texture
Makes sunscreens feel lighter and less sticky, which can encourage more consistent daily use.
Cons and cautions
Synthetic ingredient
Derived from petroleum, which may be a concern for those seeking natural or eco-friendly products.
Limited UV protection
Polysilicone-15 alone does not provide broad-spectrum protection; it must be combined with other UV filters for adequate sun defense.
Best for
- People who want water-resistant sunscreens
- Those with oily or combination skin who prefer a matte finish
Use caution if
- Individuals who avoid silicones in their skincare routine
- Those with very sensitive skin that reacts to film formers
Usage tips
Safety summary
Polysilicone-15 is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. However, its environmental persistence is a concern.
Research notes
Research indicates Polysilicone-15 is an effective film former that enhances water resistance and improves the sensory properties of sunscreens. Its UV-absorbing capacity is modest, so it is always used with other filters. Safety assessments have not raised significant health concerns for topical use.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved as a UV filter in the EU and many other regions; not FDA-approved for use in sunscreens in the United States.
- Common uses
- Sunscreens, Moisturizers, Makeup primers
- Environmental note
- Silicones like Polysilicone-15 are not biodegradable and may accumulate in the environment. Some studies suggest they can be persistent in aquatic ecosystems.
Good to know
- Polysilicone-15 is approved for use in sunscreens in many countries, including the EU and Asia, but is not yet approved by the FDA for use in the US.
Common questions
What is Polysilicone-15 in beauty products?
Polysilicone-15 is a type of silicone that forms a thin, flexible film on your skin. In sunscreens, it helps the product spread evenly and stay put even when you sweat or go in the water. It also makes the sunscreen feel less greasy and more comfortable to wear.
What does Polysilicone-15 do in a beauty product?
When applied to the skin, Polysilicone-15 forms a uniform, water-resistant film that helps other sunscreen ingredients stay in place. It also has mild UV-absorbing properties, contributing to the overall sun protection factor (SPF).
Is Polysilicone-15 safe for most people?
Polysilicone-15 is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. However, its environmental persistence is a concern.
Who should be careful with Polysilicone-15?
Individuals who avoid silicones in their skincare routine Those with very sensitive skin that reacts to film formers
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.