Isostearic Acid

5+ year old childrenSkin contact product

Check for Different Age (6 available)

Is this kid-friendly to use Isostearic Acid?

YES - Generally Safe
Danger Score: 1 (Lower is safer)
Quick Answer: Isostearic Acid is generally considered safe for 5+ year old children when used in topical products. Kids may have different tolerance levels.

ℹ️General Overview

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.

What to Do

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.

⚠️Warnings

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.

Confidence: MODERATE

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Safety Risk Labels

This ingredient has the following documented risks:

Absorbed: A published study on fatty acid isomers found this ingredient can act as a skin penetration enhancer. That means it can help itself and other ingredients get through skin and into the body (study on fatty acid isomers, 1989).
Hormones: A government toxicology review reports one or more studies showing weak endocrine (hormone) effects. This means it may change how normal hormones work in the body (National Toxicology Program).
Environmental: A national environmental agency has flagged this chemical as suspected to be toxic to the environment, so it could harm wildlife or ecosystems if released (Environment Canada).

Tap or hover over labels to see detailed risk information.

Alternative Names for Isostearic Acid

This ingredient may also be listed as:

isostearic acidCAS-30399-84-9C20356MFCD00044082J-016709NCGC00164392-02NCGC00164392-01ISOSTEARIC ACID, >=97% (CAPILLARY GC)AS-57253W-109211NCGC00255115-01

Always check ingredient labels carefully, as ingredients may be listed under different names.

Products Containing Isostearic Acid

This ingredient is found in the following products:

This list shows products that contain Isostearic Acid or its alternative names.

Common Questions About Isostearic Acid

Is this kid-friendly to use Isostearic Acid?

Yes, Isostearic Acid is generally considered safe for 5+ year old children based on current research.

What are the absorbed risks of Isostearic Acid for children?

Can be absorbed through the skin and get into the bloodstream.

What are the hormones risks of Isostearic Acid for children?

May mess with natural hormone development in babies and children.

What are the environmental risks of Isostearic Acid for children?

Possible negative effects on the environment

What products contain Isostearic Acid?

Isostearic Acid is commonly found in skincare products, cosmetics, and topical applications. Always check ingredient labels before use.

When can kids start using products with Isostearic Acid?

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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