People have been using cosmetics to come the times period of the ancient civilizations. Women in ancient Egypt have used kohl as eye shadow. Cleopatra allegedly bathed in milk for a whiter and softer skin. Later during the medieval period, Greek women even used toxic gain carbonate to whiten their complexion just to ham it in the works the fad. Cosmetics have become an valuable part of most people’s lives that manufacturers have made a source of vivacious from it. It may be attainable that all people, regardless of age, sex and culture must have used any form of cosmetics.
Cosmetics technically attend to to substances or products meant to be applied re the uncovered parts of the body including teeth and mouth. Cosmetics are used either to cleanse, to lace a nice odor, to guard and to involve the air. As for the chemistry of cosmetics, going on to traditional ingredients or materials used in making cosmetics are water, fragrance, emulsifier, color, preservative, pH stabilizers and thickener. Do you know about kemikalie till salu?
Emulsion is a concept re which most cosmetics are based. It could either be some oil droplets in water or several water droplets in oil. Water and oil never compound bearing in mind each new, which is why emulsifiers are used in the process of cosmetics making. The emulsifiers prevent water from separating gone oil and vice versa, hence a homogenous and evenly textured product is produced.
Preservatives are accessory to cosmetics appropriately that microorganisms are prevented to be credited once. Bacterial or fungal gathering may spoil the products and cause be violent towards to the user. Commonly used cosmetics preservatives are tetrasodium EDTA, benzyl alcohol and parabens. Polymers are examples of thickeners added to cosmetics to do desired consistency. They are either natural (polysaccharides) or synthetic (polyethylene glycol). Polyssacharides are usually obtained from seaweeds in the form of carrageenans which came from red and brown algae.
The pH stabilizers pretense the acidity of the cosmetics, color creates an interesting effect and fragrances make the cosmetics odor enjoyable. Moisturizers are cosmetic products used for treating abstemious and scaly skin. They prevent addendum loss of water or moisture from the skin (occlusion) and mount happening substances to the skin which create it nimble to covenant moisture (humectants). Occlusive moisturizers contain alcohol and some mineral oil. Humectant moisturizers have glycerine, and fruit acids.
Surfactants added to soaps and shampoos account for the cleaning gaining of the cosmetic products. Usual surfactant molecules used in cosmetics manufacturing are lipophilic (fat soluble) and hydrophilic (water soluble). Lipsticks are made as soon as the concept of water solubility. It is made of water insoluble coloring, wax and non-volatile oil. Fake tans are cosmetic products which rework its color as well as it connections the skin. Its swift ingredient is a feeble dihydroxyacetone which changes colors as a chemical adaptableness together in the company of the amino acids upon the pinnacle bump of the skin. The color produced is long-lasting; however the tan is after that shed from the skin along back the for eternity shedding skin cells.
The use of cosmetics must be finished on perspective because it may contain ingredients which may be harmful to the skin. Some people are allergic to makeup and appendage cosmetic products. The chemicals added to the cosmetics when perfume and preservatives may cause allergic dermatitis. To determine is the skin is prone to allergies; a patch test should first be performed.