For babies 6–12 months (infants, crawling babies), cyclopentasiloxane is not the safest choice for regular use. It can be absorbed through baby skin, and there are animal studies and government reviews that raise concerns about contamination and buildup in the body and environment.
If possible, choose products without this ingredient for daily skin care. If you do use a product that contains it, prefer rinse-off products (like shampoos) over leave-on lotions, use a very small amount, avoid the face and nose area, do not apply to broken skin, and stop use if you see redness or rash. For new products do a small patch test on a small area and wait 24–48 hours to watch for reactions.
Watch for rashes, redness, or dryness after use and stop using right away if these appear. Be cautious about products used near the nose and mouth because some troubling studies that raised concerns used inhalation routes; also there are contamination concerns with related chemicals (cyclotetrasiloxane/D4) and national reviews (Environment Canada and regulatory candidate lists) that flag this ingredient as persistent in the environment. If you’re unsure, choose simpler formulations or products labeled free of cyclic siloxanes.
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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.
Cyclopentasiloxane is not recommended for 6-12 month old babies due to potential safety risks.
May mess with natural hormone development in babies and children. This is especially important for babies whose skin and systems are still developing.
Possible effects on early brain growth and mental development. This is especially important for babies whose skin and systems are still developing.
May harm organs like liver, kidneys, or lungs with repeated use. This is especially important for babies whose skin and systems are still developing.
Connected to cancer risk with long-term or repeated exposure. This is especially important for babies whose skin and systems are still developing.
Builds up in the body over time with repeated use. This is especially important for babies whose skin and systems are still developing.
Linked to long-term health effects after years of use or exposure. This is especially important for babies whose skin and systems are still developing.
Can be absorbed through the skin and get into the bloodstream. This is especially important for babies whose skin and systems are still developing.
Possible negative effects on the environment This is especially important for babies whose skin and systems are still developing.
Some studies link this to future fertility or reproductive issues. This is especially important for babies whose skin and systems are still developing.
Banned or heavily restricted in one or more countries. This is especially important for babies whose skin and systems are still developing.
Detected in breast milk, meaning it can pass from mom to baby. This is especially important for babies whose skin and systems are still developing.
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 6-12 month old babies. Use the age selector above to check other ages.
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