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Use of Vegetable Oils in Cosmetics Manufacturing Introducti

The Use of Vegetable Oils in Cosmetics

This research reviews the use of vegetable oils in the manufacture of cosmetics. The focus of such use is on the use of vegetable oils in cosmetics designed for use in facial care, especially facial massage. Within the context of the broader field of cosmetic chemistry, this research deals more specifically with skin care raw materials.

Many facial care products incorporating vegetable oils as ingredients are prepared in the form of emulsions. An important characteristic of materials used as emulsifiers is stability, which is related to factors such as the hydrophilic/lipophilic balance (HLB), phase inversion temperature (PIT), and the cohesive energy ratio (Evison, 1996).

ôThe main physicochemical characteristics that need to be controlled in cosmetic emulsions are their formation and stability in storage, as well as their rheology, which controls spreadability and skin feelö (Evison, 1996, p. 35). Rheological measurements are used to determine the long-term physical stability of a delivery system as well as its application. ôAn emulsion creamÆs rheological properties are claimed to determine the oil layerÆs final thickness and the creamÆs aesthetic properties, such as stickiness, stiffness and oilinessö (Evison, 1996, p. 35).

Poor raw material stability can have ôdramatic, negative effects on finished products. Cosmetic à product manufacturers must concern themselves with a raw materialÆs stability prior to the compounding of their finished product à, as well as the stability of the material once it becomes part of a specific formulation. The formation of objectionable odors, discoloration, viscosity changes, and the development of precipitates are all within the realm of possibilities if a raw material is unstableö (Hannon, 1997, p. 34).

Vegetable oils generally are characterized by only one concern related to stability. This concern is the development of an ...

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Use of Vegetable Oils in Cosmetics Manufacturing Introducti. (1969, December 31). In LotsofEssays.com. Retrieved 04:22, March 29, 2024, from https://www.lotsofessays.com/viewpaper/1692859.html