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Is Sodium Laureth Sulfate (SLES) Safe? What You Need to Know

4/10

Safety Score

Concern Level: high

Sodium Laureth Sulfate (SLES) has moderate safety concerns. Consider alternatives where possible, especially for vulnerable populations.

Common uses: shampoo, body wash, bubble bath, hand soap

What Is Sodium Laureth Sulfate (SLES)?

A milder surfactant than SLS, but may be contaminated with 1,4-dioxane during the ethoxylation manufacturing process.

Commonly found in: shampoo, body wash, bubble bath, hand soap

Safety Research & Evidence

A milder surfactant than SLS, but may be contaminated with 1,4-dioxane during the ethoxylation manufacturing process.

Regulatory status: Generally considered safe; 1,4-dioxane contamination not regulated

Health Concerns

skin irritation

Evidence: Moderate

Research indicates skin irritation may be associated with exposure to Sodium Laureth Sulfate (SLES). Particularly concerning for infants, people with sensitive skin.

contamination with 1,4-dioxane

Evidence: Moderate

Research indicates contamination with 1,4-dioxane may be associated with exposure to Sodium Laureth Sulfate (SLES). Particularly concerning for infants, people with sensitive skin.

eye irritation

Evidence: Moderate

Research indicates eye irritation may be associated with exposure to Sodium Laureth Sulfate (SLES). Particularly concerning for infants, people with sensitive skin.

Vulnerable Populations

Extra caution recommended for: infants, people with sensitive skin

Safer Alternatives

AlternativeSafety Score
Coco Glucoside8/10
Sodium Cocoyl Glycinate8/10

How to Avoid Sodium Laureth Sulfate (SLES)

  1. Read ingredient labels carefully for "Sodium Laureth Sulfate (SLES)" or its chemical synonyms
  2. Choose products with third-party certifications (EWG Verified, Made Safe)
  3. Consider alternatives like Coco Glucoside or Sodium Cocoyl Glycinate
  4. Check the EWG Skin Deep database for product ratings
  5. Look for "Sodium Laureth Sulfate (SLES)-free" labels on product packaging

Frequently Asked Questions

Is Sodium Laureth Sulfate (SLES) safe for babies?

No, we recommend avoiding Sodium Laureth Sulfate (SLES) in products used on or around babies due to their developing systems.

What are the safest alternatives to Sodium Laureth Sulfate (SLES)?

Safer alternatives include Coco Glucoside (safety score: 8/10), Sodium Cocoyl Glycinate (safety score: 8/10).

Is Sodium Laureth Sulfate (SLES) banned in other countries?

Regulatory status: Generally considered safe; 1,4-dioxane contamination not regulated

How do I know if my product contains Sodium Laureth Sulfate (SLES)?

Check the full ingredient list on the product label. Sodium Laureth Sulfate (SLES) may also appear under different chemical names. Using apps like EWG Healthy Living or Think Dirty can help identify it.

Related Safety Guides

References

  1. Robinson VC et al. (2010). Safety assessment of SLES and related compounds PMID: 20649168