Steareth-2

Q: What is Steareth-2 used for in cosmetics?

Steareth-2 is primarily used as an emulsifier and surfactant to help mix oil and water-based ingredients. It's commonly found in creams, lotions, and other personal care products.

Q: Is Steareth-2 safe for sensitive skin?

While generally considered safe, Steareth-2 can cause irritation for those with sensitive skin, particularly in products with high concentrations. Patch testing prior to use is recommended.

Q: Does Steareth-2 contain 1,4-dioxane?

Steareth-2 may be contaminated with trace amounts of 1,4-dioxane if not purified properly during manufacturing. This chemical is a potential carcinogen, but reputable products typically ensure its removal.

Q: Can Steareth-2 affect hormonal balance?

There is a low risk that impurities like 1,4-dioxane can impact hormonal health, although the risks are minimal in well-regulated products. Always choose products from reputable brands.

CAS: 9005-00-9 | Synonyms: Polyoxyethylene (2) stearyl ether, Stearyl alcohol, ethoxylated, PEG-2 Stearate +2

Safer alternative: Cetearyl Alcohol

Toxicity Score

5 /10

Caution

Primary Concern

skin irritation

Found In

Lotions, Creams, Sunscreens

Persona Risk

Medium Risk for Skin & Allergy

Put Simply

Steareth-2 is an ingredient that helps mix oil and water in lotions, creams, and other beauty products so they feel nice and smooth on your skin. Some people with sensitive skin might find it irritating or have an allergic reaction, especially if there's a lot of it in a product. There's also a small chance it might be contaminated with something linked to cancer, but this is rare if it's made correctly.

Clinical Summary

Steareth-2 is a polyethylene glycol ether of stearic acid. It is commonly used in cosmetics and personal care products as an emulsifier or surfactant. While generally considered safe, steareth-2 can cause skin irritation and allergic reactions in sensitive individuals, especially if present in high concentrations. The risk of contamination with 1,4-dioxane, a potential carcinogen, exists if not properly purified during manufacturing.

Identified Health Risks

skin irritation

allergic reactions

What This Score Means

Use Caution. This ingredient scores 5/10. While not the worst offender, it has documented risks — especially for sensitive individuals, pregnant women, or children.

Regulatory Status

Cross-referenced safety assessments from regulatory bodies

Organization

Rating

Concern

EWG

Skin irritation and contamination with 1,4-dioxane

ECHA

Classified

Potential contamination risks

Also Listed On Labels As

Polyoxyethylene (2) stearyl ether Stearyl alcohol, ethoxylated PEG-2 Stearate Stearate-2 Polyethylene glycol stearate

Risk by Health Profile

Skin & Allergy Medium Risk

Can cause skin irritation and allergic reactions in sensitive individuals.

Hormone & Endocrine Low Risk

Contamination with 1,4-dioxane during manufacturing can be a concern.

Frequently Asked Questions

What is Steareth-2 used for in cosmetics?

Is Steareth-2 safe for sensitive skin?

Does Steareth-2 contain 1,4-dioxane?

Can Steareth-2 affect hormonal balance?

Sources & Citations

[1]
EWG Skin Deep (Ingredient ID: 704346)
[2]
PubMed Central (PMCID: PMC6017969)
[3]
ECHA

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