For adults, this ingredient is usually low risk when put on normal, unbroken skin. It’s commonly used and most people won’t have problems. But there are some safety flags from animal studies and from environmental regulators, so a little caution is reasonable.
Use products with this ingredient on normal skin only. Avoid spray or aerosol products to prevent breathing it in. Do not put it on broken or irritated skin. If you use it often over large body areas, consider switching to a product without it. If you are pregnant, breastfeeding, or have health concerns, choose an alternative without this ingredient.
Watch for new or worsening skin irritation or rashes after use. Avoid breathing in sprays — inhalation is the main route linked to concerns in animal studies (see inhalation study from 2005 and hormonal-effect studies from 1999 and 2007). Also note regulators have raised contamination and persistence concerns (Environment Canada and a candidate high-concern substance list). These are the sources behind the caution: the cited animal inhalation studies (2005; 1999; 2007) and Environment Canada / candidate substance lists for persistence and contamination.
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This ingredient has the following documented risks:
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This ingredient may also be listed as:
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This ingredient is found in the following products:
This list shows products that contain Cyclopentasiloxane or its alternative names.
Scientific research related to this ingredient:
These research articles provide scientific evidence about Cyclopentasiloxane safety and effects.
Yes, Cyclopentasiloxane is generally considered safe for adults based on current research.
May mess with natural hormone development in babies and children.
Possible effects on early brain growth and mental development.
May harm organs like liver, kidneys, or lungs with repeated use.
Connected to cancer risk with long-term or repeated exposure.
Builds up in the body over time with repeated use.
Linked to long-term health effects after years of use or exposure.
Can be absorbed through the skin and get into the bloodstream.
Possible negative effects on the environment
Some studies link this to future fertility or reproductive issues.
Banned or heavily restricted in one or more countries.
Detected in breast milk, meaning it can pass from mom to baby.
Cyclopentasiloxane is commonly found in skincare products, cosmetics, and topical applications. Always check ingredient labels before use.
The appropriate age depends on the specific ingredient properties and concentration. This analysis is for adults. Use the age selector above to check other ages.
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