Cleaning Agents & Cosmetics PDF

SH1690 CLASSIFICATIONS OF CLEANING AGENTS Surfactants, or surface-active ingredients, are chemical agents that aid in cleaning surfaces that contain oil, stains, and dirt, which usually are not soluble in water. They include a hydrophilic (water- loving) polar head and a hyd...

SH1690 CLASSIFICATIONS OF CLEANING AGENTS Surfactants, or surface-active ingredients, are chemical agents that aid in cleaning surfaces that contain oil, stains, and dirt, which usually are not soluble in water. They include a hydrophilic (water- loving) polar head and a hydrophobic (water-fearing) nonpolar tail. The head interacts with polar molecules like water, while the tail that is usually comprised of a hydrocarbon chain attaches to nonpolar substances like oil. Bleaching agents are formulations that cause whitening – or lightening – to an affected substrate by solubilizing color-producing substances or by altering their light-absorbing properties. These substances are usually oxidizing agents, such as peroxides and chlorine. Disinfectants are substances made to lessen, if not eradicate, harmful microbes on surfaces. Sanitizers work in the same manner as disinfectants. Types of Cleaning Agents: 1. General-purpose cleaners are substances that are weakly alkaline intended for a variety of uses. Compounds found in these cleaners are generally alcohols, silicates, sodium carbonate, phosphates, and sodium EDTA. 2. Bathroom cleaners are products specifically designed for bathroom surfaces, such as tubs, tiles, and toilet bowls, which generally develop stains like mildew. They are either acidic or alkaline, depending on the surface they will be used on. Alkaline cleaners are best to use for bathroom floors, walls, tiles, and bathtubs because they preserve the enamel finishes of these surfaces; acidic cleansers can damage enamels. Cleansers with acidic active ingredients like phosphoric acid and citric acid are recommended for other bathroom parts with rust and mineral deposits. Some cleansers have additional components, such as surfactants, that aid in the removal of soap and fatty deposits. Furthermore, toilet bowl cleaners are usually liquid and acidic and may contain bleaching agents such as hydrogen peroxide or hypochlorite. 3. Special surface cleaners are substances designed to clean certain surface materials such as glass, vinyl, carpets, and upholstery, to name a few. Glass cleaners typically contain water, glycol ethers, ammonia, and alcohols. They are commercially available as moistened towelettes or liquid or aerosol sprays. Carpet and upholstery cleaners are sold as liquid shampoos or as powders. Both forms may contain surfactants, foam stabilizers, alcohols, and/or glycol ethers, but the powders may have additional porous carrier materials that trap dirt. One advantage of powders over liquids is that they allow for more natural cleaning of the surface with vacuum cleaners. 4. Stain and deposit removers are substances designed to remove spots, usually with the aid of abrasive materials such as steel wools and brushes. They are typically commercialized in fluids and stick forms, but they can also be sold in powder and paste forms. These substances contain crystalline and amorphous silica, feldspar, clay, and chalk alongside surfactants, solvents, and enzymes. They are sometimes improved by adding ingredients such as sodium carbonate, bleaching agents, and oxalic acid. CLASSIFICATIONS OF COSMETICS 1. Lotions are substances that generally moisturize and soften the skin. They usually contain mineral oil, beeswax, preservatives, and perfumes or fragrances. Lotions that contain a high amount of hydrating ingredients are specifically called moisturizers. They contain emollients that decrease skin flaking by creating a layer of oil on top of the skin. This layer traps water and prevents it from escaping the skin, thus keeping the skin hydrated. 2. Deodorants are products designed to prevent and remove unpleasant body smells and are available in the market as liquids, powders, or sprays. They contain aluminum or zirconium compounds as active ingredients. 3. Perfumes are products that impart a fragrant odor and are usually composed of aromatic oils, alcohol, and water. 4. Shaving creams soften hair strands in many different parts of the body, which allows for their easy removal. They are mainly made up of stearic acid, mineral oils, water, perfume, and preservatives. 5. Toothpaste, which cleanse and polish teeth and freshen breath, contain polishing agents, surfactants, sweetener, and flavoring agents. 6. Shampoos are used to cleanse hair, with their main ingredients include surfactants and antidandruff substances. Other components include colors, perfumes, and preservatives. 01 Handout 2 *Property of STI Page 1 of 2  SH1690 7. Skin whiteners, which are among the most popular products nowadays, contain bleaching or antioxidant substances like glutathione, Metathione, hydroquinone, tretinoin, and kojic acid that inhibit melanin production in the skin. Reference: Santiago, K.S., & Silverio, A. A. (2016). Exploring life through science: Physical science. Phoenix Publishing House 01 Handout 2 *Property of STI Page 2 of 2