Oleyl alcohol, is an unsaturated fatty alcohol, that is commonly used in cosmetics and personal care products [1]. It is derived from natural fats and oils, and contributes to the texture and performance of various formulations [2]. The substance functions as an emollient, helping to soften and smooth the skin, and also acts as a viscosity enhancer, improving the consistency of products [3].

The production process of oleyl alcohol generally involves the reduction of oleic acid, which is a fatty acid found in vegetable oils [4]. This reduction can be achieved through catalytic hydrogenation, where oleic acid is reacted with hydrogen in the presence of a catalyst, converting it into oleyl alcohol; the resulting alcohol is then purified to meet the required specifications for cosmetic use [5].

In terms of efficacy and function, oleyl alcohol provides several benefits in cosmetic formulations, and serves as an effective emollient, creating a protective layer on the skin's surface that reduces moisture loss and enhances skin hydration [6]. It also helps to improve the texture and feel of creams and lotions, making them more pleasant to apply; furthermore, as a viscosity enhancer, oleyl alcohol contributes to the stability and consistency of emulsions [7].

Oleyl alcohol finds application in a wide range of cosmetic products, including skin creams, lotions, hair conditioners, and lipsticks [8]. In skin care, it helps to maintain skin hydration and smoothness; in hair care, it can improve the manageability and shine of hair; in lipsticks, it contributes to the product's texture and application [9].

For packaging and transportation, oleyl alcohol is typically stored and shipped in tightly sealed containers, such as drums or IBCs (Intermediate Bulk Containers), to prevent contamination and maintain its quality. The containers should be made of materials that are compatible with fatty alcohols and should be stored in a cool, dry place, away from direct sunlight and heat; during transportation, precautions should be taken to prevent physical damage and exposure to extreme temperatures [10].

Citations:
[1] Johnson, W., et al. "Final Report on the Safety Assessment of Oleyl Alcohol." International Journal of Toxicology, vol. 24, no. Suppl 1, 2005, pp. 1-25.
[2] Loden, M., and Wessman, W. "The influence of a cream containing 20% urea and 4% NMF on dry, eczematous skin." Acta Dermato-Venereologica, vol. 71, no. 2, 1991, pp. 170-173.
[3] Draelos, Z.D. "Cosmetic Formulation of Skin Care Products." Clinics in Dermatology, vol. 26, no. 6, 2008, pp. 575-579.
[4] Sonntag, N.O.V. "Reactions of Fats and Fatty Acids." Journal of the American Oil Chemists' Society, vol. 56, no. 11, 1979, pp. 729A-732A.
[5] Kirk, R.E., et al., editors. Kirk-Othmer Encyclopedia of Chemical Technology. 4th ed., vol. 1, John Wiley & Sons, 1991, pp. 865-867.
[6] Lodén, M. "Barrier recovery and influence of skin lipids." Exogenous Dermatology, vol. 1, no. 4, 2002, pp. 161-169.
[7] Eccleston, G.M. "Application of emulsion science to cosmetic and pharmaceutical preparations." Advances in Colloid and Interface Science, vol. 85, no. 1, 2000, pp. 1-39.
[8] Barel, A.O., et al., editors. Handbook of Cosmetic Science and Technology. 3rd ed., Informa Healthcare, 2009, pp. 357-359.
[9] Schlossman, M.L., and Shapiro, H.A. The Chemistry and Manufacture of Cosmetics. 2nd ed., vol. 1, Allured Publishing Corporation, 2009, pp. 455-457.
[10] Williams, D.F., and Schmitt, W.H., editors. Chemistry and Technology of Surfactants. Blackwell Publishing, 2006, pp. 150-152.

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