Cetostearyl Alcohol (CETEARYL ALCOHOL)
Global Regulation Summary
Overview of current status across major international markets.
Detailed Regional Status
| Region | Status | Max Conc. | Conditions | Source |
|---|---|---|---|---|
| πͺπΊ EU | Allowed | - | - | Official β |
| πΊπΈ USA | Allowed | - | - | Official β |
| π―π΅ Japan | Allowed | - | - | Official β |
| π°π· Korea | Allowed | - | - | Official β |
| π¬π§ UK | Allowed | - | - | Official β |
πΏ Natural Sources
Cetearyl alcohol is derived from natural plant oils high in palmitic acid (C16) and stearic acid (C18). Common sources include palm oil and palm kernel oil (Elaeis guineensis), which contain approximately 44% palmitic acid and 5% stearic acid, and coconut oil (Cocos nucifera), which contains about 9% palmitic acid and 3% stearic acid. Other sources include rapeseed (canola) oil, soybean oil, and animal fats (tallow), though plant sources dominate cosmetic applications. The fatty acids are first extracted through hydrolysis or saponification of the triglycerides, then reduced to the corresponding fatty alcohols.
π How It's Made
Cetearyl alcohol is produced through a two-step process: (1) Hydrolysis or saponification: Plant oils (palm, coconut) are treated with water under high pressure and temperature (250Β°C, 50 bar) to break down triglycerides into free fatty acids and glycerol. Alternatively, base-catalyzed saponification produces fatty acid soaps, which are then acidified. (2) Hydrogenation: The fatty acids (primarily palmitic C16 and stearic C18) are hydrogenated using a metal catalyst (typically copper chromite or nickel) at high temperature (250-300Β°C) and pressure (200-300 bar) with hydrogen gas. This reduces the carboxylic acid group (-COOH) to a primary alcohol group (-CH2OH), yielding cetyl alcohol (C16H33OH) and stearyl alcohol (C18H37OH). The two are blended in desired ratios to create cetearyl alcohol. Modern 'green chemistry' approaches use catalytic hydrogenation with renewable hydrogen or enzymatic reduction processes to reduce energy consumption and environmental impact.
π Uses in Cosmetics
Cetearyl alcohol is used in face creams and lotions (2-10%), body butters (5-15%), hair conditioners (2-5%), cleansing balms (10-30%), and emulsified scrubs (3-8%). It serves multiple functions: (1) Emollient: provides slip, smoothness, and a soft skin feel. (2) Emulsifier: when combined with emulsifying agents like ceteareth-20 or polysorbate 60, it helps form stable oil-in-water emulsions. (3) Thickener/viscosity builder: increases product thickness and creates a luxurious, rich texture. (4) Stabilizer: prevents oil and water phases from separating. (5) Opacifier: gives products a creamy, opaque appearance. The typical 50:50 blend of cetyl and stearyl alcohols has a melting point of 49-56Β°C and an HLB value of approximately 15-16 when ethoxylated (as ceteareth compounds). It is particularly valued in natural/organic formulations as an alternative to synthetic emulsifiers. Cetearyl alcohol works best in emulsions with pH 4-8 and is compatible with most cosmetic ingredients except strong acids.
π¬ Other Applications
Cetearyl alcohol is used extensively in pharmaceutical topical formulations including creams, ointments, and suppositories as an emollient and consistency regulator. It serves as an excipient in tablet coating and controlled-release drug delivery systems. In industrial applications, it functions as an anti-foam agent in textile processing, a lubricant in plastic manufacturing, and a viscosity modifier in printing inks. The food industry uses cetearyl alcohol (when food-grade) as an emulsifier and opacifying agent in certain products, though this is less common than in cosmetics. It is also employed in veterinary products, particularly in topical treatments for livestock and pets. The global fatty alcohol market (including cetearyl alcohol) exceeded 2.5 million metric tons in 2020, with cosmetics representing approximately 40% of demand.
π‘ Fun Facts
- β’ The 'alcohol-free' marketing claim in cosmetics almost never refers to fatty alcohols like cetearyl alcohol. It specifically means the absence of drying alcohols like ethanol, isopropyl alcohol, or denatured alcohol. Fatty alcohols are actually beneficial and moisturizing.
- β’ Cetearyl alcohol was one of the first emulsifiers discovered for cosmetic use in the early 20th century, predating many modern synthetic emulsifiers. It enabled the transition from cold creams to modern emulsion-based moisturizers.
- β’ The ratio of cetyl to stearyl alcohol affects the final product texture: higher cetyl content (C16, shorter chain) gives lighter, less waxy creams, while higher stearyl content (C18, longer chain) produces richer, more substantive creams.
- β’ Cetearyl alcohol is considered 'natural' under most organic certification standards (ECOCERT, COSMOS, NATRUE) because it can be derived from plant sources through relatively simple chemical processes (hydrolysis and hydrogenation) without synthetic ethoxylation or other complex modifications.
- β’ The ingredient is non-comedogenic and suitable for all skin types, including sensitive and acne-prone skin, despite initial concerns about 'alcohols' clogging pores. Studies show it has a comedogenicity rating of 2 on a scale of 0-5 (where 5 is most likely to clog pores).
- β’ Cetearyl alcohol can be used as a sole emulsifier in simple formulations (like traditional cold cream), but modern formulations typically combine it with emulsifying waxes or ethoxylated alcohols (ceteareth-20) for better stability and texture.
- β’ The ingredient biodegrades readily (>60% in 28 days) and has very low aquatic toxicity, making it environmentally preferable to many synthetic alternatives.
- β’ Historically, cetyl alcohol was first isolated from sperm whale oil (spermaceti) in the 1800s, hence the name 'cetyl' from the Latin word 'cetus' meaning whale. Today, all cosmetic cetyl and cetearyl alcohols are plant-derived.
- β’ The melting point of cetearyl alcohol (49-56Β°C) is why creams containing it need to be heated during manufacturing. Once cooled and emulsified, the fatty alcohol solidifies within the emulsion structure, providing stability and body.
Frequently Asked Questions
What is CETEARYL ALCOHOL used for in cosmetics?
CETEARYL ALCOHOL is primarily used for emulsion stabilising in cosmetic products. It also serves as emollient, surfactant - emulsifying. The ingredient is commonly found in various cosmetic and personal care products.
Which countries regulate CETEARYL ALCOHOL?
CETEARYL ALCOHOL is approved for cosmetic use in all major markets: EU, JP, US, UK, KR, with no significant restrictions.
Where can I find official regulation information about CETEARYL ALCOHOL?
Official information about CETEARYL ALCOHOL regulations can be found on government websites: EU CosIng database, US FDA Cosmetics page, Japan MHLW cosmetics standards, UK Government cosmetics guidance, and Korea MFDS. Always verify regulatory status with these official sources before making formulation decisions.
Disclaimer
The information on this website is for educational and informational purposes only and is not intended as medical advice. While we strive for accuracy based on official government databases, cosmetic regulations change frequently. Always consult with a qualified professional or refer to the latest official regulatory documents for compliance. We are not responsible for any actions taken based on the information provided here.