Is Sodium Laureth Sulfate (SLES) Safe? What You Need to Know
Safety Score
Concern Level: high
Sodium Laureth Sulfate (SLES) has moderate safety concerns. Consider alternatives where possible, especially for vulnerable populations.
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: ModerateResearch 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: ModerateResearch 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: ModerateResearch 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
| Alternative | Safety Score |
|---|---|
| Coco Glucoside | 8/10 |
| Sodium Cocoyl Glycinate | 8/10 |
How to Avoid Sodium Laureth Sulfate (SLES)
- Read ingredient labels carefully for "Sodium Laureth Sulfate (SLES)" or its chemical synonyms
- Choose products with third-party certifications (EWG Verified, Made Safe)
- Consider alternatives like Coco Glucoside or Sodium Cocoyl Glycinate
- Check the EWG Skin Deep database for product ratings
- 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
- Robinson VC et al. (2010). Safety assessment of SLES and related compounds PMID: 20649168