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Hair conditioner

Hair conditioner is a hair care cosmetic product used to improve the feel, texture, appearance, and manageability of hair. Its main purpose is to reduce friction between strands of hair to allow smoother brushing or combing, which might otherwise cause damage to the scalp.[1] Various other benefits are often advertised, such as hair repair, strengthening, or a reduction in split ends.

A 19th-century advertisement for hair-care products

Conditioners are available in a wide range of forms including viscous liquids, gels, and creams, as well as thinner lotions and sprays. Hair conditioner is usually used after the hair has been washed with shampoo. It is applied and worked into the hair, and may either be rinsed out a short time later or left in.

History

For centuries, natural oils have been used to condition human hair.[2] A conditioner popular with men in the late Victorian era was Macassar oil, but this product was quite greasy and necessitated the pinning of a small cloth, known as an antimacassar, to the headrests of chairs and sofas to preserve the upholstery from being damaged by the oil. [3]

 
A bottle of modern-day hair conditioner by Clairol (right).

Modern hair conditioner was created at the turn of the 20th century when the Edouard Pinaud company presented a product he called Brilliantine at the 1900 Exposition Universelle in Paris.[4] His product was intended to soften men's hair, including beards and moustaches.[5] Since the invention of Pinaud's early products, modern science has advanced the hair conditioner industry to include those made with silicone, fatty alcohols, and quaternary ammonium compounds. These chemical products have the benefits of hair conditioner without feeling greasy or heavy.

Mechanism of action

The outermost layer of a hair follicle is called the cuticle and is composed largely of keratin.[6] This is rich in cysteine groups which are mildly acidic.[7][8] When the hair is washed these groups can deprotonate, giving the hair a negative charge.[citation needed]

The ingredients in conditioner, especially positively charged quaternary ammonium species, such as behentrimonium chloride or polymers that are known as Polyquaternium-XX, where XX is an arbitrary number, can then become attached to the hair via electrostatic interactions. Once attached these compounds have several effects. Their long hydrocarbon backbone helps to lubricate the surface of each hair follicle, reducing the sensation of roughness and assisting combing. The surface coating of cationic groups means that hairs are repelled from each other electrostatically, which reduces clumping. The compounds can also act as antistatic agents, which helps to reduce frizzing.[citation needed]

Types

  • Conditioners, also called deep conditioners or hair masks, are heavy and thick, with a high content of cationic surfactants that are able to bind to the hair structure and "glue" the hair surface scales together. This type of conditioner is designed to restore hair's moisture levels and reduce breakage. These are usually applied to the hair for a longer time (30-45 minutes).
  • Leave-in conditioners are thinner and have different surfactants, which add only a little material to the hair to avoid weighing down the hair or causing greasiness. They are based on unsaturated fatty acid chains, which are bent, not straight. Leave-in conditioner is designed to be used in a similar way to hair oil, preventing the tangling of hair and keeping it smooth. Its use is particularly prevalent by those with naturally curly or kinky hair.
  • Rinse out/Rinse through conditioners are the most common or generic on the market. Ordinary conditioners are generally applied directly after using shampoo, and manufacturers usually produce a conditioner counterpart for different types of shampoo for this purpose.
  • Hold conditioners, based on cationic polyelectrolyte polymers, hold the hair in a desired shape. These have a function and composition similar to diluted hair gels.
  • Cleansing conditioners are a newer category, typically based on a combination of amphoteric and cationic surfactants that can be used in place of a shampoo either as a pre-treatment before shampooing for hair that is damaged or very curly.[9]

Ingredients

There are several types of hair conditioner ingredients, differing in composition and functionality:

  • Acidifiers, acidity regulators which maintain the conditioner's pH at about 3.5. In contact with acidic environment, the hair's somewhat scaly surface tightens up, as the hydrogen bonds between the keratin molecules are strengthened.[10]
  • Antistatic agents which bind to the hair and reduce the static, these can include cationic polymers such as Polyquaternium-10 and Guar Hydroxypropyltrimonium Chloride
  • Detanglers, which modify the hair surface pH as acidifiers, or by coating it with polymers, as glossers.
  • Glossers, light-reflecting chemicals which bind to the hair surface. Usually polymers, usually silicones, e.g., Dimethicone or Cyclopentasiloxane.
  • Lubricants, such as fatty alcohols, Panthenol, Dimethicone, etc.
  • Moisturizers, whose role is to hold moisture in the hair. Usually, these contain high proportions of humectants. These could also be provided by natural oils such as Prunus Amygdalus Dulcis (Sweet Almond) Oil.[11]
  • Oils (EFAs – essential fatty acids), which can help dry/porous hair become more soft and pliable. The scalp produces a natural oil called sebum. EFAs are the closest thing to natural sebum (sebum contains EFAs).
  • Preservatives that protect the product from spoilage by microorganisms during the product shelf life.
  • Reconstructors, usually containing hydrolyzed protein. Their role is supposedly to penetrate the hair and strengthen its structure through polymer crosslinking.
  • Sequestrants, for better function in hard water.
  • Sunscreen, for protection against protein degradation and color loss. Currently Benzophenone-4 and Ethylhexyl Methoxycinnamate are the two sunscreens most commonly used in hair products. Cinnamidopyltrimonium Chloride and a few others are used to a much lesser degree. The common sunscreens used on skin are rarely used for hair products due to their texture and weight effects.
  • Surfactants – approximately 97% of hair consists of a protein called keratin. The surface of keratin contains negatively charged amino acids. Hair conditioners therefore usually contain cationic surfactants, which don't wash out completely, because their hydrophilic ends strongly bind to keratin. The hydrophobic ends of the surfactant molecules then act as the new hair surface.[12] Examples are Behentrimonium Chloride and Cetrimonium Chloride
  • Thermal protectors, usually heat-absorbing polymers, shielding the hair against excessive heat, caused by, e.g., blow-drying, curling irons or hot rollers.

pH

Conditioners are frequently acidic, as low pH protonates the keratin's amino acids. The hydrogen ions give the hair a positive charge and create more hydrogen bonds among the keratin scales, giving the hair a more compact structure. Organic acids such as citric acid are usually used to maintain acidity.

See also

References

  1. ^ André O. Barel; Marc Paye; Howard I. Maibach (3 March 2009). Handbook of Cosmetic Science and Technology, Third Edition. CRC Press. pp. 687–. ISBN 978-1-4200-6968-6.
  2. ^ . www1.american.edu. Archived from the original on 2017-03-19. Retrieved 2016-01-01.
  3. ^   One or more of the preceding sentences incorporates text from a publication now in the public domainChisholm, Hugh, ed. (1911). "Antimacassar". Encyclopædia Britannica. Vol. 2 (11th ed.). Cambridge University Press. p. 127.
  4. ^ Gaspar, Enrique (2012-06-26). The Time Ship: A Chrononautical Journey. Wesleyan University Press. ISBN 978-0-8195-7239-4.
  5. ^ "The History of Conditioner". Prell. Retrieved 2016-01-01.
  6. ^ Yang, Fei-Chi (2014-10-14). "The structure of people's hair". PeerJ. 2: e619. doi:10.7717/peerj.619. PMC 4201279. PMID 25332846.
  7. ^ Dawber, Rodney (January 1996). "Hair: Its structure and response to cosmetic preparations". Clinics in Dermatology. 14 (1): 105–112. doi:10.1016/0738-081X(95)00117-X. PMID 8901408.
  8. ^ Longo, V. M.; Monteiro, V. F.; Pinheiro, A. S.; Terci, D.; Vasconcelos, J. S.; Paskocimas, C. A.; Leite, E. R.; Longo, E.; Varela, J. A (April 2006). "Charge density alterations in human hair fibers: an investigation using electrostatic force microscopy". International Journal of Cosmetic Science. 28 (2): 95–101. doi:10.1111/j.1467-2494.2006.00280.x. PMID 18492143. S2CID 6402716.
  9. ^ Chung, Madelyn (May 29, 2017). "Everything You Need to Know About Cleansing Conditioners". Fashion Magazine. Retrieved July 21, 2021.
  10. ^ "Introduction". wwwcourses.sens.buffalo.edu. Retrieved 2016-01-01.
  11. ^ Hair Conditioner, Moisturizer. "Understanding Scalp Issues".
  12. ^ "How does hair conditioner work? » Scienceline". scienceline.org. 2014-01-09. Retrieved 2016-01-01.

External links

  • How Hair Conditioner Works at h2g2
  • How to Apply Hair Conditioner at wikiHow

hair, conditioner, confused, with, conditioner, hair, care, cosmetic, product, used, improve, feel, texture, appearance, manageability, hair, main, purpose, reduce, friction, between, strands, hair, allow, smoother, brushing, combing, which, might, otherwise, . Not to be confused with Air conditioner Hair conditioner is a hair care cosmetic product used to improve the feel texture appearance and manageability of hair Its main purpose is to reduce friction between strands of hair to allow smoother brushing or combing which might otherwise cause damage to the scalp 1 Various other benefits are often advertised such as hair repair strengthening or a reduction in split ends A 19th century advertisement for hair care products Conditioners are available in a wide range of forms including viscous liquids gels and creams as well as thinner lotions and sprays Hair conditioner is usually used after the hair has been washed with shampoo It is applied and worked into the hair and may either be rinsed out a short time later or left in Contents 1 History 2 Mechanism of action 3 Types 4 Ingredients 4 1 pH 5 See also 6 References 7 External linksHistory EditFor centuries natural oils have been used to condition human hair 2 A conditioner popular with men in the late Victorian era was Macassar oil but this product was quite greasy and necessitated the pinning of a small cloth known as an antimacassar to the headrests of chairs and sofas to preserve the upholstery from being damaged by the oil 3 A bottle of modern day hair conditioner by Clairol right Modern hair conditioner was created at the turn of the 20th century when the Edouard Pinaud company presented a product he called Brilliantine at the 1900 Exposition Universelle in Paris 4 His product was intended to soften men s hair including beards and moustaches 5 Since the invention of Pinaud s early products modern science has advanced the hair conditioner industry to include those made with silicone fatty alcohols and quaternary ammonium compounds These chemical products have the benefits of hair conditioner without feeling greasy or heavy Mechanism of action EditThe outermost layer of a hair follicle is called the cuticle and is composed largely of keratin 6 This is rich in cysteine groups which are mildly acidic 7 8 When the hair is washed these groups can deprotonate giving the hair a negative charge citation needed The ingredients in conditioner especially positively charged quaternary ammonium species such as behentrimonium chloride or polymers that are known as Polyquaternium XX where XX is an arbitrary number can then become attached to the hair via electrostatic interactions Once attached these compounds have several effects Their long hydrocarbon backbone helps to lubricate the surface of each hair follicle reducing the sensation of roughness and assisting combing The surface coating of cationic groups means that hairs are repelled from each other electrostatically which reduces clumping The compounds can also act as antistatic agents which helps to reduce frizzing citation needed Types EditThis section needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Hair conditioner news newspapers books scholar JSTOR May 2021 Learn how and when to remove this template message Conditioners also called deep conditioners or hair masks are heavy and thick with a high content of cationic surfactants that are able to bind to the hair structure and glue the hair surface scales together This type of conditioner is designed to restore hair s moisture levels and reduce breakage These are usually applied to the hair for a longer time 30 45 minutes Leave in conditioners are thinner and have different surfactants which add only a little material to the hair to avoid weighing down the hair or causing greasiness They are based on unsaturated fatty acid chains which are bent not straight Leave in conditioner is designed to be used in a similar way to hair oil preventing the tangling of hair and keeping it smooth Its use is particularly prevalent by those with naturally curly or kinky hair Rinse out Rinse through conditioners are the most common or generic on the market Ordinary conditioners are generally applied directly after using shampoo and manufacturers usually produce a conditioner counterpart for different types of shampoo for this purpose Hold conditioners based on cationic polyelectrolyte polymers hold the hair in a desired shape These have a function and composition similar to diluted hair gels Cleansing conditioners are a newer category typically based on a combination of amphoteric and cationic surfactants that can be used in place of a shampoo either as a pre treatment before shampooing for hair that is damaged or very curly 9 Ingredients EditThis section needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed May 2021 Learn how and when to remove this template message There are several types of hair conditioner ingredients differing in composition and functionality Acidifiers acidity regulators which maintain the conditioner s pH at about 3 5 In contact with acidic environment the hair s somewhat scaly surface tightens up as the hydrogen bonds between the keratin molecules are strengthened 10 Antistatic agents which bind to the hair and reduce the static these can include cationic polymers such as Polyquaternium 10 and Guar Hydroxypropyltrimonium Chloride Detanglers which modify the hair surface pH as acidifiers or by coating it with polymers as glossers Glossers light reflecting chemicals which bind to the hair surface Usually polymers usually silicones e g Dimethicone or Cyclopentasiloxane Lubricants such as fatty alcohols Panthenol Dimethicone etc Moisturizers whose role is to hold moisture in the hair Usually these contain high proportions of humectants These could also be provided by natural oils such as Prunus Amygdalus Dulcis Sweet Almond Oil 11 Oils EFAs essential fatty acids which can help dry porous hair become more soft and pliable The scalp produces a natural oil called sebum EFAs are the closest thing to natural sebum sebum contains EFAs Preservatives that protect the product from spoilage by microorganisms during the product shelf life Reconstructors usually containing hydrolyzed protein Their role is supposedly to penetrate the hair and strengthen its structure through polymer crosslinking Sequestrants for better function in hard water Sunscreen for protection against protein degradation and color loss Currently Benzophenone 4 and Ethylhexyl Methoxycinnamate are the two sunscreens most commonly used in hair products Cinnamidopyltrimonium Chloride and a few others are used to a much lesser degree The common sunscreens used on skin are rarely used for hair products due to their texture and weight effects Surfactants approximately 97 of hair consists of a protein called keratin The surface of keratin contains negatively charged amino acids Hair conditioners therefore usually contain cationic surfactants which don t wash out completely because their hydrophilic ends strongly bind to keratin The hydrophobic ends of the surfactant molecules then act as the new hair surface 12 Examples are Behentrimonium Chloride and Cetrimonium Chloride Thermal protectors usually heat absorbing polymers shielding the hair against excessive heat caused by e g blow drying curling irons or hot rollers pH Edit Conditioners are frequently acidic as low pH protonates the keratin s amino acids The hydrogen ions give the hair a positive charge and create more hydrogen bonds among the keratin scales giving the hair a more compact structure Organic acids such as citric acid are usually used to maintain acidity See also EditAnointing Brilliantine Brylcreem Pomade ShampooReferences Edit Andre O Barel Marc Paye Howard I Maibach 3 March 2009 Handbook of Cosmetic Science and Technology Third Edition CRC Press pp 687 ISBN 978 1 4200 6968 6 Argan oil as a geographic indication www1 american edu Archived from the original on 2017 03 19 Retrieved 2016 01 01 One or more of the preceding sentences incorporates text from a publication now in the public domain Chisholm Hugh ed 1911 Antimacassar Encyclopaedia Britannica Vol 2 11th ed Cambridge University Press p 127 Gaspar Enrique 2012 06 26 The Time Ship A Chrononautical Journey Wesleyan University Press ISBN 978 0 8195 7239 4 The History of Conditioner Prell Retrieved 2016 01 01 Yang Fei Chi 2014 10 14 The structure of people s hair PeerJ 2 e619 doi 10 7717 peerj 619 PMC 4201279 PMID 25332846 Dawber Rodney January 1996 Hair Its structure and response to cosmetic preparations Clinics in Dermatology 14 1 105 112 doi 10 1016 0738 081X 95 00117 X PMID 8901408 Longo V M Monteiro V F Pinheiro A S Terci D Vasconcelos J S Paskocimas C A Leite E R Longo E Varela J A April 2006 Charge density alterations in human hair fibers an investigation using electrostatic force microscopy International Journal of Cosmetic Science 28 2 95 101 doi 10 1111 j 1467 2494 2006 00280 x PMID 18492143 S2CID 6402716 Chung Madelyn May 29 2017 Everything You Need to Know About Cleansing Conditioners Fashion Magazine Retrieved July 21 2021 Introduction wwwcourses sens buffalo edu Retrieved 2016 01 01 Hair Conditioner Moisturizer Understanding Scalp Issues How does hair conditioner work Scienceline scienceline org 2014 01 09 Retrieved 2016 01 01 External links Edit Wikimedia Commons has media related to Hair care How Hair Conditioner Works at h2g2 How to Apply Hair Conditioner at wikiHow Retrieved from https en wikipedia org w index php title Hair conditioner amp oldid 1139294684, wikipedia, wiki, book, books, library,

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