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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...
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Hand washing...
Micelles01:30

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Colloids03:22

Colloids

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Hair Cells01:22

Hair Cells

Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
Handwashing II: Pre-procedure and Initial Procedure Steps01:19

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Preparation of Keratin Hydrolysate from Chicken Feathers and Its Application in Cosmetics
08:29

Preparation of Keratin Hydrolysate from Chicken Feathers and Its Application in Cosmetics

Published on: November 27, 2017

Shampoos.

Matthew Zirwas1, Jessica Moennich

  • 1Ohio State University, Columbus, USA.

Dermatitis : Contact, Atopic, Occupational, Drug
|May 12, 2009
PubMed
Summary
This summary is machine-generated.

Common shampoo allergens like fragrance and cocamidopropyl betaine are prevalent. Identifying these allergens helps patients avoid allergic reactions and find suitable hair care products.

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Published on: September 26, 2019

Area of Science:

  • Dermatology
  • Cosmetic Science

Background:

  • Shampoos are daily-use hair care products in developed nations.
  • Contact allergy to shampoo ingredients is a recognized clinical issue.
  • Systematic reviews of shampoo ingredients in the U.S. are infrequent.

Purpose of the Study:

  • To identify and quantify the most frequent contact allergens in commercially available shampoos in the United States.
  • To provide updated data on common shampoo ingredients causing allergic reactions.

Main Methods:

  • Analysis of a database of shampoo products from a major drugstore.
  • Quantification of the prevalence of known contact allergens within these products.

Main Results:

  • Fragrance was the most prevalent allergen.
  • Other common allergens included cocamidopropyl betaine, methylchloroisothiazolinone/methylisothiazolinone, formaldehyde releasers, and propylene glycol.
  • Less frequent but notable allergens were vitamin E, parabens, benzophenones, iodopropynyl butylcarbamate, and methyldibromoglutaronitrile/phenoxyethanol.

Conclusions:

  • Several common allergens are frequently present in U.S. shampoos.
  • Awareness of these ingredients is crucial for dermatologists and patients managing shampoo allergies.
  • Patch testing aids in identifying specific allergens for personalized shampoo selection.