For newborns and babies under 6 months, this ingredient is generally low risk but data are limited. Because baby skin is very delicate, I recommend extra caution.
Prefer products made and labeled for infants. Avoid applying products with this ingredient to very young babies unless necessary. Do not use concentrated ingredient forms on baby skin. If you must use a product with isostearic acid, use a small amount on a small area first and watch for irritation. Stop use and see a doctor if you notice a rash, persistent redness, swelling, or eye irritation.
Watch for skin redness, rash, or stinging—stop use if these occur. Cosmetic Ingredient Review notes that this ingredient can increase skin absorption of other substances and has gaps in safety data; the National Toxicology Program found some weak hormone-related signals in studies. If your baby has very sensitive skin, eczema, or broken skin, avoid this ingredient and choose products made specifically for newborns.
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This ingredient is found in the following products:
This list shows products that contain Isostearic Acid or its alternative names.
Yes, Isostearic Acid is generally considered safe for 0-6 month old babies based on current research.
Can be absorbed through the skin and get into the bloodstream. This is especially important for babies whose skin and systems are still developing.
May mess with natural hormone development in babies and children. 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.
Isostearic Acid 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 0-6 month old babies. Use the age selector above to check other ages.
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