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Ceteareth-20
ORY® product lines:
☑ Skincare
☑ Haircare
◐ Handmade Soap (limited: syndet bars, liquid products)
☑ Cosmetics — three-line functional ingredient
Ceteareth-20 is a non-ionic, high-HLB emulsifier made by attaching about 20 ethylene-oxide units to cetearyl alcohol. It is the water-loving partner in many classic emulsifier systems — including “Emulsifying Wax” (Polawax-type: cetearyl alcohol + ceteareth-20) — and it excels at producing stable, elegant oil-in-water lotions and creams that tolerate acids, salts, and cationic conditioners alike. The Cosmetic Ingredient Review Panel has assessed alkyl PEG ethers including the ceteareths and concluded they are safe in cosmetics when formulated to be non-irritating [1]. Like all ethoxylated ingredients it is excluded from COSMOS/Ecocert standards and must be sourced with controlled 1,4-dioxane residues, so ORY® positions it as a conventional-formulation option alongside PEG-free alternatives.
What is Ceteareth-20 made of?
Ceteareth-20 is produced by ethoxylating plant-derived cetearyl alcohol with ~20 moles of ethylene oxide. Points to know [1]:
- Cetearyl alcohol core: C16/C18 fatty alcohol (coconut/palm).
- ~20 ethylene-oxide units: Water-loving PEG chain; HLB ~15.5.
- Non-ionic: Compatible with anionic, cationic, and acidic ingredients.
- Physical form: White waxy flakes; melts at ~40–45 °C.
- Residual 1,4-dioxane and ethylene oxide: Must be controlled (<10 ppm dioxane).
What skin type is best suited for Ceteareth-20?
Ceteareth-20 is a functional emulsifier suitable for all seven ORY® skin types at use levels:
- Normal: Elegant lotions and creams.
- Dry: Stable rich creams with cetearyl alcohol.
- Oily: Light, fast-absorbing lotions.
- Combination: Balanced emulsions.
- Acne-prone: Non-comedogenic at use levels; stable with salicylic acid.
- Mature: Stable delivery of retinol, vitamin C, and acids.
- Sensitive: Low irritation at use levels [1]; PEG-free alternatives available for those who prefer.
What hair type is best suited for Ceteareth-20?
Ceteareth-20 pairs well with cationic conditioners and builds stable hair creams:
- Dry or damaged: Co-emulsifier in conditioners and masks (compatible with BTMS).
- Curly and coily: Curl creams and leave-ins.
- Color-treated: Stable in acidic color-care formulas.
- Oily scalp: Light scalp lotions.
- Straight, wavy, sensitive scalp, dandruff-prone, mature or thinning: Functional; neutral for hair type.
What are the benefits of Ceteareth-20?
Ceteareth-20’s benefits are functional [1, 2]:
- High-HLB emulsifier: Stable, elegant O/W emulsions with fatty alcohols or glyceryl stearate.
- Broad compatibility: Works with acids, salts, and cationics (BTMS).
- Solubilizer: Disperses oils and fragrances in water-based products.
- Low melting point: Easy processing.
- Stable: Robust freeze–thaw and heat performance.
- Elegant sensory: Light, non-tacky creams.
- Mild at use levels: [1].
Dual use across ORY® product lines
Ceteareth-20 serves emulsions across skincare, haircare, and cosmetics; not used in cold-process soap, but suitable for syndet bars and liquid cleansers.
Pros and cons of Ceteareth-20
Pros
Cons
- Reliable and versatile: Works with almost everything.
- Compatible with cationics: Unlike anionic systems.
- CIR-reviewed: [1].
- Affordable: Economical.
- Elegant textures: Premium feel at low cost.
- Ethoxylated (PEG): Excluded from natural standards.
- 1,4-dioxane control: Requires certified grades.
- Can enhance penetration: Use with care alongside potent actives on damaged skin.
- Consumer perception: Offer PEG-free options.
- Not for cold-process soap: Structural only in solid bars.
What is the best application of Ceteareth-20?
Ceteareth-20 is built into emulsions:
- Lotion: 1.5–2% with 2–3% cetearyl alcohol.
- Cream: 3% with 4–5% cetearyl alcohol.
- Conditioner: 1% with 3–5% BTMS.
- Sunscreen: 2–3% for stable mineral dispersion.
- Cosmetics: Cream foundation; cleansing lotion.
Peer-reviewed references
- Fiume MM, Heldreth B, Bergfeld WF, et al. Safety assessment of alkyl PEG ethers as used in cosmetics. International Journal of Toxicology. 2012;31(5 Suppl):169S–244S.
- Elder RL (ed). Final report on the safety assessment of cetearyl alcohol, cetyl alcohol, isostearyl alcohol, myristyl alcohol, and behenyl alcohol. Journal of the American College of Toxicology. 1988;7(3):359–413.
Disclaimer:
The information on this page is provided by ORY International, LC for educational purposes only. It summarizes published research about ceteareth-20 as an ingredient, including laboratory and animal studies and clinical studies of formulas that may differ from ORY® products. Results from these studies may not apply to every person or to ORY® products. This page is not medical advice and does not replace advice from a dermatologist, physician, or other qualified healthcare provider.
ORY® Skincare, Haircare, Handmade Soap, and Cosmetics products are cosmetics. They are not intended to diagnose, treat, cure, mitigate, or prevent any disease or condition, including eczema, dermatitis, acne, dandruff, or any other condition. References to FDA or Cosmetic Ingredient Review (CIR) findings describe the ingredient, not ORY® products, and do not mean FDA has reviewed or approved any ORY® product.
Results vary by skin and scalp type, formulation, and use. Emulsifiers are rarely irritating at normal use levels, and any cosmetic can cause irritation, sometimes from other ingredients. Always patch test, follow label directions, and stop use if irritation occurs. If you are pregnant, nursing, have a medical condition, or are buying for a child, consult a healthcare provider before use.
ORY International, LC works to keep this page accurate and current but makes no warranty as to its completeness. To the fullest extent permitted by law, ORY International, LC is not liable for any loss or injury arising from reliance on this information or from use of any product contrary to its label directions. To report a reaction, contact us at [insert contact email / phone].
