Ducusin, Cester Gale A.
1De Jesus, Medarlo, School of Chemical Engineering, Chemistry and Biotechnology, Mapua Institute of Technology; 2Ducusin, Cester Gale A., CHM144L/A21, School of Chemical Engineering, Chemistry and Biotechnology, Mapua Institute of Technology
Lotion is a thick, smooth liquid preparation designed to be applied to the skin for medicinal or cosmetic purposes. It can be a liquid, usually aqueous or sometimes alcoholic preparation containing insoluble material in the form of a suspension or emulsion, intended for external application without rubbing, in such skin conditions as itching, infection, allergy, pain, or the like. The purpose of this experiment is to be able to prepare hand and body lotion and to determine the function of each material used in making the product. The chemicals that were used in the experiment include stearic acid, cetyl alcohol, mineral oil, glycerin, triethanolamine, preservative, and fragrance. It is showed that steric acid serves as a lubricant for the lotion or to prevent the oxidation. The cetyl alcohol acts as a skin softener. The mineral oil serves as lubricant laxative. The glycerin acts a moisturizer to the hair and skin. The triethanolamine that is essential tool as a surfactant is also added. Lastly, the preservative is used to maintain the good quality of the lotion. This experiment concludes how the function of each material is important in the role of lotion making industry.
Excavation of Mesolithic civilization sites dating as far back as 10,000 B.C. indicates that our earliest ancestors may have rubbed oil from castor plants on their skin. Ancient Egyptian tombs opened within the last century reveal small pottery jars filled with animal fat and olive oil substances to which spices were added. Biblical accounts tell us that people living during that time considered it a luxury to have their feet washed and ointment massaged into the skin. B. Definition and Uses
A lotion is a low- to medium-viscosity topical preparation intended for application to unbroken skin. By contrast, creams and gels have higher viscosity. Lotions are applied to external skin with
bare hands, a brush, a clean cloth, cotton wool, or gauze. Many lotions, especially hand lotions and body lotions are formulated not as a medicine delivery system, but simply to smooth, re-hydrate, and soften the skin. These are particularly popular with the aging and aged demographic groups, and in the case of face usage, can also be classified as a cosmetic in many cases, and may contain fragrances. C. Objectives
The purpose of this experiment is to be able to prepare hand and body lotion and to determine the role of each material use in making lotion.
II. MATERIALS AND METHODS
The apparatus that were used in the experiment include thermometer, beaker 250 mL (2 pcs), beaker 500 mL, beaker 50 mL (2 pcs), and stirring rod. The chemicals that were used in the experiment include stearic acid, cetyl alcohol, mineral oil, glycerin, triethanolamine, preservative, and fragrance.
This formulation was considered in making the lotion:
The required amount of stearic acid, cetyl alcohol, mineral oil, glycerin and water was weighed and placed in a 250 mL capacity beaker. The materials were heated to 70 degrees celsius until all solids liquefied. After heating, triethanolamine was added. The mixture was cooled to room
temperature using a water bath. The mixture was mixed while cooling. The fragrance was added when the temperature reaches room temperature. The lotion was transferred to a desired packaging.
Fig. 7. After a week of fermentation Fig. 8. Determining the new specific gravity
III. RESULTS AND DISCUSSIONS
Observations during the experiment:
Upon mixing the components, only minute amounts of...
References:  De Jesus, Medarlo., Industrial Chemistry hand-outs, Mapua Institute of Technology, School of Chemistry and Chemical Engineering
 Writing contributors, http://en.wikipedia.org/wiki/Lotion, Lotion
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