For infants and babies 6–12 months: this ingredient is commonly used in creams and lotions and is generally seen as low risk for things like cancer or allergies, but the biggest worry is tiny amounts of manufacturing contaminants that can sometimes be present. Babies’ skin is still sensitive, so we treat it more cautiously than for older kids.
If you need to use a product that lists Steareth-21: choose baby-formulated or reputable brands that test for contaminants, use it sparingly, avoid applying to broken or irritated skin, do a small patch test on the inner forearm first, and stop use if redness, rash, or irritation appears. For routine care, prefer products labeled for infants or those that avoid ethoxylated ingredients if you want extra caution.
Watch for signs of skin irritation (redness, rash, stinging). The main safety note comes from reviews that flag possible contamination with ethylene oxide and 1,4-dioxane (reported by Environment Canada and noted in cosmetic safety reviews). Cosmetic safety reviewers have also listed irritation potential (Cosmetic Ingredient Review). Some product verification programs restrict this ingredient unless manufacturers provide extra testing. If you are worried about residues or your baby has very sensitive skin, pick products without ethoxylated ingredients or consult your pediatrician.
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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 Steareth-21 or its alternative names.
Use caution with Steareth-21 for 6-12 month old babies. Some safety concerns have been identified.
Connected to cancer risk with long-term or repeated exposure. 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.
Steareth-21 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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