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[1] [2] Other proponents avoid shampoos because they believe some of the ingredients to be harmful. Sulfates like sodium lauryl sulfate can be irritants; [9] [10] sulfate-free shampoos are also marketed based on this concern. [11] There are also pollution concerns with the fungicides in dandruff shampoo. [12] [13]
Sodium laureth sulfate (SLES), an accepted contraction of sodium lauryl ether sulfate, also called sodium alkylethersulfate, is an anionic detergent and surfactant found in many personal care products (soaps, shampoos, toothpaste, etc.) and for industrial uses. SLES is an inexpensive and very effective foaming agent. [1]
This sparked great interest in the development of synthetic detergents that biodegrade into environmentally friendly byproducts. Such interest has led to the development of the linear carbon chain compounds commonly used today, such as sodium lauryl sulfate and sodium laureth sulfate/ sodium lauryl ether sulfate (SLS/SLES). [6]
When the study participants used a hot styling tool that reached 210 degrees Celsius/410 degrees Fahrenheit, the chemical emissions from the hair care products increased anywhere from 50% to 310%.
Shampoo is typically used to remove the unwanted build-up of sebum (natural oils) in the hair without stripping out so much as to make hair unmanageable. Shampoo is generally made by combining a surfactant, most often sodium lauryl sulfate or sodium laureth sulfate, with a co-surfactant, most often cocamidopropyl betaine in water.
A common example is sodium lauryl sulfate, with the formula CH 3 (CH 2) 11 OSO 3 Na. Also common in consumer products are the sulfate esters of ethoxylated fatty alcohols such as those derived from lauryl alcohol. An example is sodium laureth sulfate, an ingredient in some cosmetics. [2]
Personal care products such as cosmetics, shampoos, shower gel, hair conditioners, and toothpastes. Surfactants are used in firefighting (to make "wet water" that more quickly soaks into flammable materials [11] [12]) and pipelines (liquid drag reducing agents). Alkali surfactant polymers are used to mobilize oil in oil wells.
Changes in hair: You may start to notice thinning, hair loss, brittleness, or dryness. Changes in skin : This often looks like noticeable dryness, flaky, or scaly skin, especially around the eyes ...
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