EWG Skin Deep® | What is CYCLOTETRASILOXANE

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Data: Fair

Cyclotetrasiloxane

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Other Concerns

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

SYNONYMS

CYCLOTETRASILOXANE, CYCLOTETRASILOXANE, OCTAMETHYL, CYCLOTETRASILOXANE, OCTAMETHYL-, DECAMETHYLCYCLOTETRASILOXANE, HEXANETHYLCYCLOTRISILOXANE, OCTAMETHYL CYCLOTETRASILOXANE, OCTAMETHYL- CYCLOTETRASILOXANE, and OCTAMETHYLCYCLOTETRASILOXANE

Cyclotetrasiloxane is a cyclic dimethyl polysiloxane.

Common concerns

See how this product scores for common concerns.

LOW

Cancer
LOW

Allergies & Immunotoxicity
MODERATE

Developmental and Reproductive Toxicity
HIGH

Use Restrictions

Ingredient concerns

CONCERNS
DATA SOURCES

Products with this Ingredient

lipstick	49 products
hair treatment/serum	20 products
foundation	19 products
conditioner	18 products
facial moisturizer/treatment	13 products
hair spray	10 products
lip gloss	10 products
daily use with SPF	6 products
hair styling aide	6 products
shampoo	4 products
styling gel/lotion	3 products
	3 products
moisturizer	3 products
around-eye cream	2 products
makeup remover	1 products
setting powder/spray	1 products
detangler	1 products
recreational sunscreen	1 products
makeup primer	1 products
BB cream	1 products
cuticle treatment	1 products
mascara	1 products
styling mousse/foam	1 products

Use restrictions

CONCERN	REFERENCE
Violation of government restrictions - Banned or found unsafe for use in cosmetics	CosIng

Organ system toxicity (non-reproductive)

CONCERN	REFERENCE
Classified as a high human health priority	Environment Canada Domestic Substance List
Classified as expected to be toxic or harmful	Environment Canada Domestic Substance List

Persistence and bioaccumulation

CONCERN	REFERENCE
Persistent or bioaccumulative and moderate to high toxicity concern in humans	Environment Canada Domestic Substance List
Persistent, bioaccumulative in wildlife	Canada PBTs - Accelerated Reduction/Elimination of Toxics (ARET)

Endocrine disruption

CONCERN	REFERENCE
Human endocrine disruptor - strong evidence	European Commission on Endocrine Disruption

Developmental/reproductive toxicity

CONCERN	REFERENCE
Limited evidence of developmental toxicity	CPS&Q - Classification & Labelling

Ecotoxicology

CONCERN	REFERENCE
Wildlife and environmental toxicity	CPS&Q - Classification & Labelling
Suspected to be an environmental toxin and be persistent or bioaccumulative	Environment Canada Domestic Substance List
Suspected to be an environmental toxin	Environment Canada Domestic Substance List

Informational

CONCERN	REFERENCE
Industry or government recommendations for safe use: restrictions on concentration, impurities, product types, or manufacturing methods - any	Cosmetic Ingredient Review Assessments

Data gaps

CONCERN	REFERENCE
151 studies in PubMed science library may include information on the toxicity of this chemical	NLM PubMed

European Commission. 2013. Cosing, the European Commission database with information on cosmetic substances and ingredients. Accessed on March 1, 2013 at http://ec.europa.eu/consumers/cosmetics/cosing/ .
EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
EC (Environment Canada). 1994. Accelerated Reduction/Elimination of Toxics (ARET). ARET substance list of persistent, bioaccumulative and toxic chemicals.
EU (European Union)- Strategy for Endocrine Disrupters 2007. Commision on endocrin disruption requested by the European Parliament in 1998.
CPS&Q (Consumer Products Safety & Quality) formely known as ECB (European Chemicals Bureau). 2008. Classification and Labelling: Chemicals: Annex VI of Directive 67/548/EEC through the 31st ATP.
CIR (Cosmetic Ingredient Review). 2006. CIR Compendium, containing abstracts, discussions, and conclusions of CIR cosmetic ingredient safety assessments. Washington DC.
NLM (National Library of Medicine). 2012. PubMed online scientific bibliography data. http://www.pubmed.gov.

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.

Data availability

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

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Low Availability

Moderate Availability

High Availability