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What Are the Chemicals in Shampoo That Work?
What Are the Chemicals in Shampoo That Work?
In the shampoo aisle at any grocery store, drugstore, or beauty-supply shop you’ll find more products than you can count.shampoo & shower gel Many are aimed at treating specific hair problems, and all claim to make your hair look, smell, and feel better than the last time you washed it. You may wonder if they actually work. And if they do, what are the chemicals in shampoo that do the work?
Shampoo is a liquid detergent that cleans hair and scalp by dissolving dirt, oils, and other contaminants.shampoo & shower gel It contains surfactants (detergents that act as abrasives to trap and dissolve oils) and co-surfactants, most often sodium lauryl or sodium laureth sulfate and cocamidopropyl betaine. These ingredients are balanced to avoid removing too much oil or leaving hair dry and unmanageable.
There are between 100,000 and 150,000 hairs on a person’s head.shampoo & shower gel These fibers catch soil from the environment, especially when they’re wet, and also absorb sebum, the natural oil released by each follicle. Sebum helps keep the hair and scalp healthy and protects against damaging UV radiation. However, over time the buildup of sebum, hair sprays and gels, and other styling products can leave a film on the hair. Shampoo removes these films and leaves the hair ready for re-styling.
Most shampoos contain one or more conditioning agents that improve the feel and manageability of the hair.shampoo & shower gel These are usually derived from silicones or fatty alcohols. Silicones have lubricious properties that make it easier to detangle and style hair and prevent static or “fly-away” hair. They are also often used to provide a shiny, glossy appearance to the hair. Fatty alcohols have similar qualities but tend to be less greasy and more easily absorbed by the scalp.
Many shampoos are pearlescent, a visual effect achieved by adding a small amount of a colorant like titanium dioxide or mica and a thickening agent like polyethylene glycol dimethicone or stearic acid.shampoo & shower gel Most shampoos also include emulsifiers, which help the shampoo blend with water and other ingredients. They may also contain preservatives to keep the product safe from mold and bacteria, as well as other chemicals that add fragrance or color.
A shampoo’s formula is tested many times to ensure that its quality and performance will not change significantly over a period of time. These tests are called stability tests. Once a shampoo has been stabilized it is then tested for its effectiveness against different hair types and conditions such as dandruff or itchy scalp. If the shampoo is found to be effective and stable against these conditions it is then marketed to consumers. Some shampoos are formulated to be particularly mild, or specialized for certain kinds of hair such as curly or color treated hair. In these cases the formulation is more likely to be regulated as an over-the-counter medication rather than a cosmetic. These types of shampoos must be labeled as such. Some are also made specifically for pets and contain medications such as flea control or insecticides.
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