SLES-Free means the product does not contain sodium laureth sulfate. It is not automatically sulfate-free.

What it means

SLES is sodium laureth sulfate (INCI: Sodium Laureth Sulfate; also called sodium lauryl ether sulfate). It is an anionic surfactant widely used in shampoos, body washes, and some cleaners for foaming and cleansing.

Related but distinct chips (do not merge):

• SLS-Free: no sodium lauryl sulfate (Sodium Lauryl Sulfate).
• Sulfates-Free: broader absence of sulfate surfactants (per CleenBeez policy: never claim sulfate-free when SCS/SLS/SLES/sulfosuccinates appear on INCI).

A product can be SLES-Free yet still contain SLS or other sulfates.

Who backs it

No dedicated SLES-Free certification body. Free-from claim verified via ingredient list. Safety evaluations of SLES as a class exist in cosmetic ingredient review literature. An absence claim is not a statement that SLES is banned.

How it’s tested / verified

• INCI / ingredient declaration: absence of Sodium Laureth Sulfate (and synonymous labeling).
• Watch for related laureth sulfate salts (for example, ammonium laureth sulfate). Whether those violate a brand’s “SLES-Free” marketing depends on brand definition; strictly, SLES equals sodium laureth sulfate. CleenBeez Sulfates-Free policy is stricter for the broader chip.
• No single third-party SLES-Free seal.

What it doesn’t mean

• Not automatically “sulfate-free.”
• Not milder by definition. Alternative surfactants can still irritate some users.
• Not the same as soap-free, fragrance-free, or ethoxylate-free (SLES is ethoxylated; other ethoxylates may remain).
• Does not imply 1,4-dioxane-free for the whole formula (dioxane is a potential ethoxylation impurity topic for many ethoxylates). UNKNOWN for product-specific levels without testing.

Pros

• Precise for shoppers specifically avoiding SLES.
• Complements SLS-Free and Sulfates-Free Education (already live for sulfates guide / SLS).

Cons / limitations

• Narrow claim can be mistaken for full sulfate-free.
• Surfactant chemistry jargon confuses shoppers (lauryl versus laureth).

How to shop for it

Spell out sodium laureth sulfate (SLES) on labels and INCI. If you want no sulfate surfactants broadly, use the Sulfates-Free chip and check for SLS, SLES, SCS, and sulfosuccinates.

Bottom line

SLES-Free is a narrow absence claim. Cross-check SLS-Free and Sulfates-Free separately. Do not claim SLES is “toxic” or “safe” as an absolute; irritation is individual.

Sources

• https://allergycertified.com/articles/sodium-lauryl-sulfate-sls-and-sodium-laureth-sulfate-sles-facts-safety-and-skin-irritation/

Writing notes

• Soft gap: CIR PDF for SLES toxicology not fetched this cycle. Pack avoids safety absolutes.
• Always cross-link SLS-Free and Sulfates-Free Education.
• CleenBeez does not stock or sell products; editorial explanation only.