<http://schema.org/articleBody>
"&amp;lt;p&amp;gt;The word surfactant is a shortened form of &amp;amp;#34;surface-active agent&amp;amp;#34;, a surfactant is a chemical that stabilizes mixtures of oil and water by reducing the surface tension at the interface between the oil and water molecules. Because water and oil do not dissolve in each other, a surfactant has to be added to the mixture to keep it from separating into layers. Surfactants in cosmetics provide one or more of six different functions:&amp;lt;/p&amp;gt;&amp;lt;ul&amp;gt;&amp;lt;li&amp;gt;Detergents - for cleansing&amp;lt;/li&amp;gt;&amp;lt;li&amp;gt;Wetting agents - in perms&amp;lt;/li&amp;gt;&amp;lt;li&amp;gt;Foaming agents - for shampoos&amp;lt;/li&amp;gt;&amp;lt;li&amp;gt;Emulsifiers - in creams and lotions&amp;lt;/li&amp;gt;&amp;lt;li&amp;gt;Conditioning agents - in skin and hair-care products&amp;lt;/li&amp;gt;&amp;lt;li&amp;gt;Solubilizers - for perfumes and flavors&amp;lt;/li&amp;gt;&amp;lt;/ul&amp;gt;&amp;lt;p&amp;gt;Below is an overview of these types of surfactants.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;I. Detergent&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Cleansing surfactants include&amp;lt;em&amp;gt; soaps and detergents&amp;lt;/em&amp;gt; that are placed on the skin or hair for cleansing purposes. \u00A0These surfactants will draw the oil to the surfactant. \u00A0Then, when the surfactant is rinsed away while holding onto the oil, the oils are rinsed off with the water.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;II. Foaming agents&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Many products such as &amp;lt;em&amp;gt;cleansers or shampoos&amp;lt;/em&amp;gt; are often available in a foam form as opposed to a liquid form. \u00A0Studies have shown that consumers often prefer the foam formulation, although the fact that it is a foam does not necessarily have anything to do with its ability to clean. \u00A0One example of a foaming face wash is the &amp;lt;a href=&amp;quot;http://www.cetaphil.com/dermacontrol-oil-control-foam-wash&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;externalLink&amp;quot; data-ordinal=&amp;quot;1&amp;quot; rel=&amp;quot;nofollow&amp;quot;&amp;gt;Cetaphil Oil-Control Foaming Face Wash&amp;lt;/a&amp;gt;. \u00A0The surfactant in the foaming agent allows the product to remain as a foam as opposed to collapsing back into liquid form. \u00A0Certain &amp;lt;em&amp;gt;topical medications&amp;lt;/em&amp;gt; such as topical steroids (e.g. &amp;lt;a href=&amp;quot;http://www.olux.com/&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;externalLink&amp;quot; data-ordinal=&amp;quot;2&amp;quot; rel=&amp;quot;nofollow&amp;quot;&amp;gt;Olux foam&amp;lt;/a&amp;gt;) or topical minoxidil are also available in foam formulation. \u00A0These foam formulations are sometimes preferred by patients when applying a medication onto the scalp.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;III. Emulsifiers&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Emulsions are mixes of oils and water that are semi-stable and do not separate out into their oil and water layers. \u00A0The surfactant allows the emulsion to have this well-blended quality. \u00A0Examples of emulsions are &amp;lt;em&amp;gt;moisturizing creams and lotions&amp;lt;/em&amp;gt;. \u00A0Consumers generally prefer moisturizers to be of uniform texture as opposed to layers of oil and water or just the oil itself. \u00A0When applied to the skin, the oils are &amp;amp;#34;delivered&amp;amp;#34; to the skin surface.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;IV. Conditioning agents&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Conditioning agents include &amp;amp;#34;leave-on&amp;amp;#34; skin and hair-care products such as &amp;lt;em&amp;gt;hair conditioners&amp;lt;/em&amp;gt;. \u00A0After using a hair conditioner, the product remains on the hair, giving it a smooth feel due to the lipophilic (oily) portion of the molecule.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;V. Solubilizers&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Surfactants may be used as solubilizers when attempting to trying to blend a small amount of oil into a large quantity of water. \u00A0Example of products include &amp;lt;em&amp;gt;colognes, perfumes, and skin toners&amp;lt;/em&amp;gt;.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;What is the chemical makeup of a surfactant?&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;Since surfactants stabilize mixtures of oil and water, they have both a hydrophilic (&amp;amp;#34;water loving&amp;amp;#34;) and lipophilic (&amp;amp;#34;oil loving&amp;amp;#34;) groups. \u00A0Having both these groups makes the surfactant amphiphilic. \u00A0The hydrophilic group allows the surfactant to be soluble in water while the hydrophobic group allows the surfactant to be soluble in oils.&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;&amp;lt;em&amp;gt;References&amp;lt;/em&amp;gt;&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;a href=&amp;quot;https://books.google.com/books?id&amp;amp;#61;2DcyKqj6dDsC&amp;amp;amp;pg&amp;amp;#61;PA241&amp;amp;amp;lpg&amp;amp;#61;PA241&amp;amp;amp;dq&amp;amp;#61;solubilization&amp;amp;#43;cosmetic&amp;amp;#43;surfactants&amp;amp;amp;source&amp;amp;#61;bl&amp;amp;amp;ots&amp;amp;#61;Dq5Fc8qlai&amp;amp;amp;sig&amp;amp;#61;yVcyh0HmKCJkU9wDpuj4A4gBMfg&amp;amp;amp;hl&amp;amp;#61;en&amp;amp;amp;sa&amp;amp;#61;X&amp;amp;amp;ei&amp;amp;#61;0mKQVebtFMHxggT12oDoDA&amp;amp;amp;ved&amp;amp;#61;0CDMQ6AEwAg#v&amp;amp;#61;onepage&amp;amp;amp;q&amp;amp;#61;solubilization%20cosmetic%20surfactants&amp;amp;amp;f&amp;amp;#61;false&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;externalLink&amp;quot; data-ordinal=&amp;quot;3&amp;quot;&amp;gt;&amp;lt;em&amp;gt;Rieger M, Rhein LD, Surfactants in Cosmetics, Second Edition. CRC Press. 1997.&amp;lt;/em&amp;gt;&amp;lt;/a&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;a href=&amp;quot;http://chemistscorner.com/cosmetic-surfactants-part-1/&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;externalLink&amp;quot; data-ordinal=&amp;quot;4&amp;quot; rel=&amp;quot;nofollow&amp;quot;&amp;gt;&amp;lt;em&amp;gt;ChemistsCorner.\u00A0&amp;lt;/em&amp;gt;http://chemistscorner.com/cosmetic-surfactants-part-1/. Accessed June 25, 2015.&amp;lt;/a&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;a href=&amp;quot;http://www.personal-care.basf.com/docs/press_center/sowf_tensidsys_e?sfvrsn&amp;amp;#61;0&amp;quot; data-component=&amp;quot;link&amp;quot; data-source=&amp;quot;inlineLink&amp;quot; data-type=&amp;quot;externalLink&amp;quot; data-ordinal=&amp;quot;5&amp;quot; rel=&amp;quot;nofollow&amp;quot;&amp;gt;Friesbach U, Erasmy J. Surfactants and Surfactant Systems for Natural and Organic Cosmetics. SOFW-Journal. 138: 2012.&amp;lt;/a&amp;gt;&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;&amp;lt;em&amp;gt;Edited by Susan J. Huang, MD&amp;lt;/em&amp;gt;&amp;lt;/p&amp;gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.verywell.com/surfactant-ingredients-skin-hair-products-1069381>