Cyclomethicone

CAS Number: 69430-24-6

SERIOUS
health hazard

MODERATE
health hazard

FEW OR NO
health hazards

0 79

80 89

90 100

Sources of exposure:

Personal care

Skin care products, makeup, foundations, hair conditioners, antiperspirants, and other silicone-containing cosmetics

Description:

Cyclomethicone is a term used for mixtures of cyclic silicone compounds that function as emollients, solvents, and conditioning agents in cosmetics. These ingredients help products spread smoothly and can provide a lightweight, non-greasy feel. Different cyclomethicone mixtures may contain varying proportions of endocrine disrupting cyclic siloxanes, including D4, D5, and D6.

Health concerns:

Reproductive Toxicity

May alter hormone function and harm reproduction.

Ecotoxicity

May be toxic to ecosystems and wildlife.

References

US National Library of Medicine. PubChem database.

HOW MILLION MARKER SCORES CHEMICALS

Million Marker's Ingredient Hazard Scoring uses multiple chemical databases and a science-backed scoring system to compute hazard scores for thousands of chemicals found in consumer products and listed on ingredient labels.

We identified key chemicals based on a database compiling dozens of authoritative sources, screening tools, and QSAR models.

Hazard scores within 11 different health categories (carcinogens, endocrine disruptors, reproductive toxicants, developmental toxicants, genotoxicity, neurotoxicity, organ system toxicity, immunotoxicity, respiratory toxicity, skin/eye/respiratory irritants, and ecotoxicity).

They are weighted based on several factors, including strength of evidence for adverse impacts in humans, severity, and potential contamination.