Hair conditioner
hair care product

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 damage the fibres. Because the hair shaft is made of dead cells that cannot renew themselves, conditioners do not repair hair biologically; they deposit material that coats the fibre and fills damaged areas of the cuticle, leaving a smoother surface. Various other benefits are often advertised, such as hair repair, strengthening, or a reduction in split ends.
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, because the anionic surfactants that clean hair also strip surface lipids and leave the fibre rougher and more negatively charged. 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.
Macassar oil, a scented hair dressing sold from the 1790s by the London barber Alexander Rowland and one of the first products in Britain to be advertised nationally, was widely used by men through much of the 19th century. The oil transferred readily from the hair to furniture, and from about 1850 washable cloths known as antimacassars were placed over the backs and arms of chairs and sofas to protect the upholstery.
The public source identifies “Hair conditioner” as hair care product. This brief keeps that definition visible, then builds a research path around Hair, conditioner and hair.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 21, 2026. The linked authority identifier is Q1056607. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1850.
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This entry incorporates text from “Hair conditioner” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.