Cetearyl alcohol is a mixture of cetyl and stearyl alcohol, both of which are fatty alcohols [1]. It appears as a white, waxy solid at room temperature. This material is not a simple alcohol like ethanol, but a blend of long-chain alcohols.
The production of cetearyl alcohol typically involves the reduction of fatty acids obtained from vegetable oils or fats. These oils, such as coconut or palm oil, undergo hydrolysis to yield fatty acids [2]. The fatty acids are then hydrogenated using a catalyst, such as nickel, under high pressure and temperature, to produce cetyl and stearyl alcohols. The resulting mixture is then refined and processed to obtain the final cetearyl alcohol product.
Cetearyl alcohol functions as an emollient, emulsion stabilizer, and viscosity-increasing agent in cosmetic formulations [3]. As an emollient, it helps to soften and smooth the skin by forming a protective layer that prevents moisture loss. It also stabilizes emulsions, preventing the separation of oil and water phases in products such as lotions and creams. Furthermore, it increases the viscosity of formulations, providing a desirable texture and consistency.
Cetearyl alcohol is used in a wide range of cosmetic and personal care products. It is commonly found in skin creams, lotions, hair conditioners, and mascaras, contributing to the texture and stability of these products [4]. It can also be used in shaving creams, sunscreens, and makeup products.
Cetearyl alcohol is generally packaged in multi-layer paper bags or fiber drums with polyethylene inner liners to prevent moisture absorption and contamination. It should be stored in a cool, dry place away from direct sunlight and heat. During transportation, it should be protected from physical damage and extreme temperatures to maintain its quality and integrity.
Citations:
[1] International Cosmetic Ingredient Dictionary & Handbook. (n.d.). Cetearyl Alcohol.
[2] Kirbaslar, Ş., Tay, A., & Kirbaslar, F. G. (2011). Production of fatty alcohols from vegetable oils. Turkish Journal of Engineering and Environmental Sciences, 35(3), 161-171.
[3] Rigoletto, R., & Stella, R. (2013). Comparative evaluation of the emulsifying properties of fatty alcohols. Journal of Surfactants and Detergents, 16(3), 359-365.
[4] Johnson, W., Bergfeld, W. F., Belsito, D. V., Hill, R. A., Klaassen, C. D., Liebler, D. C., … & Heldreth, B. (2013). Safety assessment of cetearyl alcohol, cetyl alcohol, and stearyl alcohol as used in cosmetics. International Journal of Toxicology, 32(1_suppl), 5S-30S.
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