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HOW WE DETERMINE SCORES Learn more About EWG VERIFIED®

Data: Fair

Cyclopentasiloxane

IMAGE SOURCE: PubChem

SEARCH PRODUCTS

Other Concerns

Neurotoxicity (low), Endocrine disruption (low), Persistence and bioaccumulation (high), Non-reproductive organ system toxicity (moderate), and Ecotoxicology (low)

SYNONYMS

● CYCLOPENTASILOXANE
● CYCLOPENTASILOXANE, DECAMETHYL-
● DECAMETHYL- CYCLOPENTASILOXANE
● DECAMETHYLCYCLOPENTASILOXANE

Unacceptable

Unacceptable: EWG VERIFIED products cannot contain this ingredient

Cyclopentasiloxane (cyclomethicone) is a silicon-based cyclic compound; may be associated with environmental toxicity.

Common concerns

See how this product scores for common concerns.

  • LOW
    Cancer
  • LOW
    Allergies & Immunotoxicity
  • LOW
    Developmental and Reproductive Toxicity
  • LOW
    Use Restrictions

Ingredient concerns

  • CONCERNS
  • DATA SOURCES

Products with this Ingredient

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foundation1043 products
concealer605 products
lipstick284 products
eye liner280 products
antiperspirant/deodorant252 products
eye shadow250 products
hair treatment/serum212 products
facial moisturizer/treatment153 products
moisturizer153 products
lip liner136 products
antiperspirant/deodorant (men's)130 products
conditioner120 products
makeup primer106 products
brow liner91 products
daily use with SPF82 products
recreational sunscreen82 products
hair styling aide73 products
hair spray62 products
serums & essences62 products
bronzer/highlighter62 products
CC cream58 products
shampoo56 products
blush55 products
mascara53 products
around-eye cream50 products
mask48 products
hand cream43 products
BB cream43 products
lip gloss28 products
styling gel/lotion21 products
makeup remover20 products
16 products
lip balm14 products
detangler14 products
anti-aging12 products
styling mousse/foam10 products
baby sunscreen10 products
sunless tanning9 products
eye makeup remover8 products
after shave8 products
facial cleanser7 products
setting powder/spray7 products
lip plumper6 products
beard oil6 products
lip balm with SPF6 products
body firming lotion5 products
facial powder5 products
toners/astringents5 products
body oil5 products
hair color and bleaching4 products
exfoliant/scrub4 products
other eye makeup4 products
nail treatment3 products
baby lotion3 products
makeup removing wipes3 products
beard care3 products
skin fading/lightener2 products
foot moisturizer2 products
tanning oil2 products
cuticle treatment2 products
bath oil/salts/soak2 products
fragrance for women2 products
oil controller1 products
nail polish1 products
shaving cream (men's)1 products
baby oil1 products
body spray1 products
body wash/cleanser1 products
after sun product1 products
hair-loss treatment1 products
shaving cream1 products
hair removal waxes1 products
damaged skin treatment1 products
eyelash glue1 products
liquid hand soap1 products
facial cleansing wipes1 products
hand sanitizer1 products

Persistence and bioaccumulation

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CONCERN REFERENCE
Persistent, bioaccumulative in wildlife and humansOpen scientific literature
Persistent, bioaccumulative in wildlifeCanada PBTs - Accelerated Reduction/Elimination of Toxics (ARET)

Organ system toxicity (non-reproductive)

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CONCERN REFERENCE
Classified as expected to be toxic or harmfulEnvironment Canada Domestic Substance List

Cancer

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CONCERN REFERENCE
One or more animal studies show tumor formation at moderate dosesOpen scientific literature

Neurotoxicity

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CONCERN REFERENCE
One or more animal studies show any effects at moderate dosesOpen scientific literature

Endocrine disruption

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CONCERN REFERENCE
One or more animal studies show endocrine disruption at moderate dosesOpen scientific literature

Ecotoxicology

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CONCERN REFERENCE
Suspected to be an environmental toxin and be persistent or bioaccumulativeEnvironment Canada Domestic Substance List
Suspected to be an environmental toxinEnvironment Canada Domestic Substance List

Data gaps

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CONCERN REFERENCE
119 studies in PubMed science library may include information on the toxicity of this chemicalNLM PubMed

Informational

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CONCERN REFERENCE
Industry or government recommendations for safe use: restrictions on concentration, impurities, product types, or manufacturing methods - anyCosmetic Ingredient Review Assessments
  • Open scientific/peer reviewed literature
  • EC (Environment Canada). 1994. Accelerated Reduction/Elimination of Toxics (ARET). ARET substance list of persistent, bioaccumulative and toxic chemicals.
  • EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
  • NLM (National Library of Medicine). 2012. PubMed online scientific bibliography data. http://www.pubmed.gov.
  • CIR (Cosmetic Ingredient Review). 2006. CIR Compendium, containing abstracts, discussions, and conclusions of CIR cosmetic ingredient safety assessments. Washington DC.

Understanding scores

Cosmetics and personal care products are not required to be tested for safety before being allowed on the market. The Skin Deep® scoring system was designed to help the public understand whether a product is safe to use or whether it contains ingredients of concern.

Every product and ingredient in Skin Deep gets a two-part score – one for hazard and one for data availability. The safest products score well by both measures, with a low hazard rating and a fair or better data availability rating.

HOW WE DETERMINE SCORES

Hazard score

The Skin Deep ingredient hazard score, from 1 to 10, reflects known and suspected hazards linked to the ingredients. The EWG VERIFIED® mark means a product meets EWG’s strictest criteria for transparency and health.

Score legend
WEIGHT-OF-EVIDENCE APPROACH

A product’s hazard score is not an average of the ingredients’ hazard scores. It is calculated using a weight-of-evidence approach that factors in all of the hazards or health impacts associated with the ingredients.

Data availability

The Skin Deep data availability rating reflects the number of scientific studies about the product or ingredient in the published scientific literature.

NONE LIMITED FAIR GOOD ROBUST
Low Availability
Moderate Availability
High Availability
NONE

Ingredients have not been assessed.

LIMITED-FAIR

There is only a modest volume of research.

GOOD-ROBUST

Ingredients have been studied extensively.

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