Isostearic Acid

2-5 year old preschoolersSkin contact product

Check for Different Age (6 available)

Safe for preschoolers to use Isostearic Acid?

YES - Generally Safe
Danger Score: 1 (Lower is safer)
Quick Answer: Isostearic Acid is generally considered safe for 2-5 year old children when used in topical products. Consider preschooler activity levels.

ℹ️General Overview

For toddlers and preschoolers (ages 2–5), isostearic acid is generally low risk when used in normal amounts in skin products. It helps soften skin and improve product feel. It is not thought to build up in the body.

What to Do

Use products made for children when possible. If the product lists isostearic acid, use it in small amounts and not every day over large areas of thin or broken skin. Do a small patch test on your child’s inner arm before widespread use. Prefer rinse-off washes or low-concentration formulas for young children and avoid heavy creams with many active ingredients on large areas.

⚠️Warnings

Watch for redness, itching, or a rash — this ingredient can sometimes irritate skin or eyes or increase how much other ingredients get into the skin (Cosmetic Ingredient Review). One review found a weak sign of hormone-like activity in a study (National Toxicology Program); this was described as weak, but it is a reason to avoid frequent heavy use on very young children. Some safety reviews and product verification programs recommend limits or extra safety information before using it freely — ask the maker about concentration if you are unsure (Cosmetic Ingredient Review, product verification guidance). If you see persistent irritation, stop use and talk to your pediatrician.

Confidence: MEDIUM

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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

Safe for preschoolers to use Isostearic Acid?

Yes, Isostearic Acid is generally considered safe for 2-5 year old children based on current research.

What are the absorbed risks of Isostearic Acid for preschoolers?

Can be absorbed through the skin and get into the bloodstream. Young children may be more sensitive to these effects.

What are the hormones risks of Isostearic Acid for preschoolers?

May mess with natural hormone development in babies and children. Young children may be more sensitive to these effects.

What are the environmental risks of Isostearic Acid for preschoolers?

Possible negative effects on the environment Young children may be more sensitive to these effects.

What products contain Isostearic Acid?

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

Is this suitable for preschoolers to using products with Isostearic Acid?

The appropriate age depends on the specific ingredient properties and concentration. This analysis is for 2-5 year old children. Use the age selector above to check other ages.

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