LAURETH-4
What is LAURETH-4 (CAS 5274-68-0) in cosmetics and what are its global regulatory limits?
LAURETH-4 (CAS No. 5274-68-0) is a verified cosmetic ingredient primarily functioning as Antistatic, Fragrance, Emulsifier in topical formulations. Regulated under KR MFDS (Unregulated) and EU 1223/2009 CosIng (Unregulated) statutory frameworks, it is typically formulated at 2–5% within an optimal stability window of pH 4–8.
7-Track Official Regulatory Label Names Matrix
Primary Statutory Gazette Only · Zero Machine Translation| Jurisdiction Track | Official Statutory Label Name | One-Click Copy |
|---|---|---|
| 1. Korea (MFDS Standard Name) | LAURETH-4 (KR MFDS Registered) | |
| 2. Korea Former Nomenclature History | — | — |
| 3. European Union (EU CosIng Glossary) | LAURETH-4 | |
| 4. United States (US PCPC / MoCRA INCI) | LAURETH-4 | |
| 5. US FDA OTC Monograph Active Name | — (Cosmetic Inactive / Non-OTC) | — |
| 6. China (NMPA IECIC Standard Name) | 月桂醇聚醚-4 | |
| 7. Japan (JCIA Standard / MHLW Quasi-Drug) | LAURETH-4 (Standard INCI Reference) |
Layer 1 — Statutory Regulatory Limits Across 6 Regions
| Region | Status | Max Limit | Conditions & Statutory Source |
|---|---|---|---|
| Korea (MFDS) | Unregulated | GMP | Listed in official cosmetic inventory |
| Europe (EU) | Unregulated | GMP | Listed in official cosmetic inventory |
| United States (FDA) | Unregulated | GMP | Listed in official cosmetic inventory |
| China (NMPA) | Listed / Allowed | GMP | IECIC Entry #8305 |
| Japan (MHLW) | Unregulated | GMP | Listed in official cosmetic inventory |
| ASEAN (ACD) | Unregulated | GMP | Listed in official cosmetic inventory |
Layer 3 Formulation Concentration Box-Plot vs. Statutory Limit
Layer 3 — Formulation Usage Guide (Quartiles n≥5) & Physicochemical Compatibility
| Formulation Group | Min – Q1 – Median – Q3 – Max (%) | Role & Mechanism | Source ID |
|---|---|---|---|
| Group C — Rinse-Off Cleanser / Shampoo / Body Wash | 2% · 2% · 3% · 4% · 5% | Rinse-off cleanser & surfactant system modifier | Global Starter Formulation Library Statistical Distribution (n=6, EVONIK 4 · ELEMENTIS 2) |
| Group B — O/W & W/O Emulsion / Lotion / Cream | 1% · 1.875% · 3% · 3% · 4% | Emulsion cream & lotion structural / conditioning agent | Global Starter Formulation Library Statistical Distribution (n=6, EVONIK 5 · GRANT 1) |
Stratum Corneum Penetration Depth & Bio-Spicule Transdermal Delivery
Under passive topical application, molecules diffuse tortuously through intercellular lipids. Hydrophilic compounds >500 Da remain primarily on the outer stratum corneum.
pH Stability Window (0–14), Thermal Limit & HLB Colloidal Phase Behavior
Outside pH 4–8, risk of hydrolysis, viscosity loss, or ionic dissociation increases.
Thermally stable up to 50°C during standard emulsification.
Cellular & Molecular Target Mechanism Flow
Interactive Synergy Pairings (Solid) & Incompatibility Warnings (Dashed)
Click any green synergy node to jump directly to its monograph, or click a red dashed node to inspect the chemical incompatibility mechanism.
Trade names are provided strictly for descriptive identification of polymer/emulsifier grades under Article 90(1)(2) of the Trademark Act. All trademarks belong to their respective owners.
Academic & Toxicological Synthesis
Tier 1 SynthesisSynthesized strictly from peer-reviewed PubMed abstracts and official toxicological dossiers linked to this ingredient.
Linked Peer-Reviewed Literature (NIH PubMed) (1)
Potential Carcinogens in Makeup Cosmetics. [PMID: 36981689 · 2023]
Facial makeup cosmetics are commonly used products that are applied to the skin, and their ingredients come into contact with it for many years. Consequently, they should only contain substances that are considered safe or used within an allowable range of established concentrations. According to current European laws, all cosmetics approved for use should be entirely safe for their users, and the responsibility for this lies with manufacturers, distributors, and importers. However, the use of cosmetics can be associated with undesirable effects due to the presence of certain chemical substances. An analysis of 50 random facial makeup cosmetics commercially available on the European Union market and manufactured in six European countries was carried out, concerning the presence of substances with potential carcinogenic properties, as described in recent years in the literature. Nine types of facial makeup cosmetics were selected, and their compositions, as declared on the labels, were analyzed. The carcinogens were identified with information present in the European CosIng database and according to the Insecticide Resistance Action Committee's (IRAC) classification. As a result, the following potential carcinogens were identified: parabens (methylparaben, propylparaben, butylparaben, and ethylparaben), ethoxylated compounds (laureth-4, lautreth-7, or ethylene glycol polymers known as PEG), formaldehyde donors (imidazolidinyl urea, quaternium 15, and DMDM hydantoin), and ethanolamine and their derivatives (triethanolamine and diazolidinyl urea), as well as carbon and silica. In conclusion, all of the analyzed face makeup cosmetics contain potential carcinogenic substances. The literature review confirmed the suppositions regarding the potential carcinogenic effects of selected cosmetic ingredients. Therefore, it seems necessary to carry out studies on the long-term exposure of compounds present in cosmetics and perhaps introduce stricter standards and laws regulating the potential presence of carcinogens and their activity in cosmetics.
Frequently Asked Questions (AEO Position 0)
- Q1. What are the official 7-track regulatory label names for LAURETH-4?
- Standard label names are US PCPC INCI: 'LAURETH-4', EU CosIng: 'LAURETH-4', KR MFDS: 'LAURETH-4 (KR MFDS Registered)', CN NMPA IECIC: '月桂醇聚醚-4', and JP JCIA: 'LAURETH-4'.
- Q2. Is LAURETH-4 restricted or permitted in EU, US, KR, CN, and JP cosmetics?
- Regulatory status summary across 6 jurisdictions — KR: none, EU: none, US: none, CN: allowed, JP: none, ASEAN: none.
- Q3. What is the typical formulation concentration and optimal pH window for LAURETH-4?
- In cleanser_rinse systems, LAURETH-4 is typically formulated between 2% and 5% (median 3%), with an optimal stability window of pH 4–8.
- Q4. What are the known formulation incompatibilities and synergy pairings for LAURETH-4?
- Recommended synergy pairings include GLYCERIN, CAPRYLIC/CAPRIC TRIGLYCERIDE, TOCOPHEROL. Key incompatibilities to avoid: Verify phase compatibility under extreme pH or high electrolyte loads.