For school-age children and teens, isostearic acid is generally low risk when used in normal skin products like lotions and wipes. It helps products spread and soften skin and usually does not cause serious problems.
Use products made for children when you can. If trying a new product that lists isostearic acid, do a small patch test on a tiny area of skin (behind the ear or inner forearm) and wait 24 hours to check for redness or itching. Avoid putting products with this ingredient on broken or irritated skin. If a product label or certifier says the ingredient is restricted, choose a product that is specifically formulated for kids.
Watch for any redness, itching, swelling, or burning after use — stop use if these happen. Some safety reviews (Cosmetic Ingredient Review and Environment Canada) note possible irritation, and a government toxicology review (National Toxicology Program) found weak signs of hormone-like activity in some studies. There are also some gaps in safety data and notes that the ingredient can increase how much other ingredients get into the skin. If you see worrying symptoms or prolonged reaction, talk to your pediatrician.
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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 5+ year old children based on current research.
Can be absorbed through the skin and get into the bloodstream.
May mess with natural hormone development in babies and children.
Possible negative effects on the environment
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 5+ year old children. Use the age selector above to check other ages.
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