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Related Concept Videos

Surface Active Agents01:27

Surface Active Agents

Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...
Micelles01:30

Micelles

Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
Colloids03:22

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
Detergent Purification of Membrane Proteins01:18

Detergent Purification of Membrane Proteins

Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
Solubility03:00

Solubility

Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
Surface Membrane Barriers01:18

Surface Membrane Barriers

The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...

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Enhanced Oil Recovery using a Combination of Biosurfactants
13:19

Enhanced Oil Recovery using a Combination of Biosurfactants

Published on: June 3, 2022

Surfactants, skin cleansing protagonists.

M Corazza1, M M Lauriola, M Zappaterra

  • 1Department of Clinical and Experimental Medicine, Section of Dermatology, University of Ferrara, Ferrara, Italy.

Journal of the European Academy of Dermatology and Venereology : JEADV
|July 21, 2009
PubMed
Summary
This summary is machine-generated.

Choosing the right skin cleansers is crucial for hydration and preventing damage from surfactants. This review covers soaps versus synthetic detergents (syndets) and their impact on skin.

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Area of Science:

  • Dermatology and Cosmetic Science
  • Surface Chemistry and Formulation

Background:

  • Surfactants in cosmetic products can disrupt skin proteins and lipids, leading to damage.
  • Traditional soaps, alkali salts of fatty acids, are known for their aggressive cleansing properties.
  • Modern skin cleansers include synthetic detergents (syndets) with varied surfactant types and additional beneficial ingredients.

Purpose of the Study:

  • To review existing literature on skin cleansers and their effects on the skin.
  • To discuss the comparative benefits and drawbacks of different types of cleansing agents.
  • To highlight the importance of selecting appropriate cosmetic products for skin health.

Main Methods:

  • Literature review of scientific publications on skin cleansers.
  • Analysis of surfactant properties and their interaction with skin structures.
  • Discussion of the formulation components in modern syndets.

Main Results:

  • Surfactants, particularly in traditional soaps, can cause significant cutaneous damage.
  • Syndets offer a range of surfactant options (anionic, cationic, amphoteric, non-ionic) with potentially milder effects.
  • Formulations of syndets often include emollients, humectants, and nutrients to enhance moisturizing and skin health benefits.

Conclusions:

  • The selection of skin cleansers significantly impacts skin hydration and integrity.
  • Synthetic detergents (syndets) represent an advancement over traditional soaps for minimizing surfactant-induced skin damage.
  • Understanding cleanser composition is key to maintaining healthy, hydrated skin.