New Page 1

LA GRAMMATICA DI ENGLISH GRATIS IN VERSIONE MOBILE   INFORMATIVA PRIVACY

  NUOVA SEZIONE ELINGUE

 

Selettore risorse   

   

 

                                         IL Metodo  |  Grammatica  |  RISPOSTE GRAMMATICALI  |  Multiblog  |  INSEGNARE AGLI ADULTI  |  INSEGNARE AI BAMBINI  |  AudioBooks  |  RISORSE SFiziosE  |  Articoli  |  Tips  | testi pAralleli  |  VIDEO SOTTOTITOLATI
                                                                                         ESERCIZI :   Serie 1 - 2 - 3  - 4 - 5  SERVIZI:   Pronunciatore di inglese - Dizionario - Convertitore IPA/UK - IPA/US - Convertitore di valute in lire ed euro                                              

 

 

WIKIBOOKS
DISPONIBILI
?????????

ART
- Great Painters
BUSINESS&LAW
- Accounting
- Fundamentals of Law
- Marketing
- Shorthand
CARS
- Concept Cars
GAMES&SPORT
- Videogames
- The World of Sports

COMPUTER TECHNOLOGY
- Blogs
- Free Software
- Google
- My Computer

- PHP Language and Applications
- Wikipedia
- Windows Vista

EDUCATION
- Education
LITERATURE
- Masterpieces of English Literature
LINGUISTICS
- American English

- English Dictionaries
- The English Language

MEDICINE
- Medical Emergencies
- The Theory of Memory
MUSIC&DANCE
- The Beatles
- Dances
- Microphones
- Musical Notation
- Music Instruments
SCIENCE
- Batteries
- Nanotechnology
LIFESTYLE
- Cosmetics
- Diets
- Vegetarianism and Veganism
TRADITIONS
- Christmas Traditions
NATURE
- Animals

- Fruits And Vegetables



ARTICLES IN THE BOOK

  1. Academy Award for Makeup
  2. Aloe
  3. Alpha hydroxy acid
  4. Anti-aging cream
  5. Arenation
  6. Aromatherapy
  7. Artistry
  8. Astringent
  9. Beauty
  10. Beauty mark
  11. Beauty salon
  12. Camouflage Cosmetic
  13. Campaign for Safe Cosmetics
  14. Carnauba wax
  15. Castor oil
  16. Chanel No. 5
  17. Chemical peel
  18. Christian Dior
  19. Clinique
  20. Concealer
  21. Corpse paint
  22. Cosmeceutical
  23. Cosmetic advertising
  24. Cosmetics
  25. Cosmetology
  26. Creed
  27. Dermabrasion
  28. Dermatology
  29. Destination spa
  30. Eau de cologne
  31. Electrology
  32. Elizabeth Arden
  33. Essential oil
  34. Estée Lauder
  35. Estée Lauder Companies
  36. Estée Lauder pleasures
  37. Exfoliation
  38. Eye liner
  39. Eyeshadow
  40. Facial toning
  41. Glitter
  42. Glycerol
  43. Guerlain
  44. Hair
  45. Hair extension
  46. Helena Rubinstein
  47. Hermès
  48. History of cosmetics
  49. History of Perfume
  50. Hot tub
  51. INCI
  52. Jojoba oil
  53. Kohl
  54. Lancome
  55. Lip gloss
  56. Lip plumper
  57. Lipstick
  58. List of cosmetic ingredients
  59. L'Oréal
  60. Makeover
  61. Make-up artist
  62. Manicure
  63. Mascara
  64. Max Factor
  65. Max Factor, Sr.
  66. Maybelline
  67. Microdermabrasion
  68. Nail polish
  69. Natural skin care
  70. Noxzema
  71. Olay
  72. Pedicure
  73. Perfume
  74. Perfume bottles
  75. Permanent makeup
  76. Permanent wave
  77. Plastic surgeons
  78. Retinol
  79. Revlon
  80. Rimmel
  81. Rouge
  82. Shampoo
  83. Shaving
  84. Shaving cream
  85. Shea butter
  86. Shiseido
  87. Shower gel
  88. Skin Deep
  89. Skin whitening
  90. Soap
  91. Sunless tanning
  92. Sun tanning
  93. Surfactant
  94. Talcum powder
  95. Tanning bed
  96. Tanning lamp
  97. Thanaka
  98. The Body Shop
  99. Waxing
  100. Wella
  101. What Not to Wear

 


 

 
CONDIZIONI DI USO DI QUESTO SITO
L'utente può utilizzare il nostro sito solo se comprende e accetta quanto segue:

  • Le risorse linguistiche gratuite presentate in questo sito si possono utilizzare esclusivamente per uso personale e non commerciale con tassativa esclusione di ogni condivisione comunque effettuata. Tutti i diritti sono riservati. La riproduzione anche parziale è vietata senza autorizzazione scritta.
  • Il nome del sito EnglishGratis è esclusivamente un marchio e un nome di dominio internet che fa riferimento alla disponibilità sul sito di un numero molto elevato di risorse gratuite e non implica dunque alcuna promessa di gratuità relativamente a prodotti e servizi nostri o di terze parti pubblicizzati a mezzo banner e link, o contrassegnati chiaramente come prodotti a pagamento (anche ma non solo con la menzione "Annuncio pubblicitario"), o comunque menzionati nelle pagine del sito ma non disponibili sulle pagine pubbliche, non protette da password, del sito stesso.
  • La pubblicità di terze parti è in questo momento affidata al servizio Google AdSense che sceglie secondo automatismi di carattere algoritmico gli annunci di terze parti che compariranno sul nostro sito e sui quali non abbiamo alcun modo di influire. Non siamo quindi responsabili del contenuto di questi annunci e delle eventuali affermazioni o promesse che in essi vengono fatte!
  • L'utente, inoltre, accetta di tenerci indenni da qualsiasi tipo di responsabilità per l'uso - ed eventuali conseguenze di esso - degli esercizi e delle informazioni linguistiche e grammaticali contenute sul siti. Le risposte grammaticali sono infatti improntate ad un criterio di praticità e pragmaticità più che ad una completezza ed esaustività che finirebbe per frastornare, per l'eccesso di informazione fornita, il nostro utente. La segnalazione di eventuali errori è gradita e darà luogo ad una immediata rettifica.

     

    ENGLISHGRATIS.COM è un sito personale di
    Roberto Casiraghi e Crystal Jones
    email: robertocasiraghi at iol punto it

    Roberto Casiraghi           
    INFORMATIVA SULLA PRIVACY              Crystal Jones


    Siti amici:  Lonweb Daisy Stories English4Life Scuolitalia
    Sito segnalato da INGLESE.IT

 
 



COSMETICS
This article is from:
http://en.wikipedia.org/wiki/Shampoo

All text is available under the terms of the GNU Free Documentation License: http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License 

Shampoo

From Wikipedia, the free encyclopedia

 

Shampoo is a common hair care product used for the removal of oils, dirt, skin particles, environmental pollutants and other contaminant particles that gradually build up in hair. The goal is to remove the unwanted build-up without stripping out so much as to make hair unmanageable.

Shampoo, when lathered with water, is a surfactant, which, while cleaning the hair and scalp, can remove the natural oils (sebum) which lubricate the hair shaft.

Shampooing is frequently followed by conditioners which increase the ease of combing and styling.

History

The word shampoo in English usage dates back to 1762, with the meaning "to massage". The word was a loan from Anglo-Indian shampoo, in turn from Hindi chāmpo (चाँपो /tʃãːpoː/), imperative of chāmpnā (चाँपना /tʃãːpnaː/), "to smear, knead the muscles, massage". It itself comes from Sanskrit/Hindi word "champā" (चम्पा /tʃəmpaː/), the flowers of the plant Michelia champaca which have traditionally been used to make fragrant hair-oil.

The term and service was introduced by a Sake Dean Mahomed, who opened a shampooing bath known as Mahomed's Indian Vapour Baths in Brighton in 1759. His baths were like Turkish baths where clients received an Indian treatment of champi (shampooing) or therapeutic massage. His service was appreciated; he received the high accolade of being appointed ‘Shampooing Surgeon’ to both George IV and William IV.

During the early stages of shampoo, English hair stylists boiled shaved soap in water and added herbs to give the hair shine and fragrance. Kasey Hebert was the first known maker of shampoo, and the origin is currently attributed to him.

Originally, soap and shampoo were very similar products; both containing surfactants, a type of detergent. Modern shampoo as it is known today was first introduced in the 1930s with Drene, the first synthetic (non-soap) shampoo.[1]

From ancient times to this day, Indians have been using different formulations of shampoos using herbs like neem, shikakai or soapnut, henna, bael, brahmi, fenugreek, buttermilk, amla, aloe, and almond in combination with some aromatic components like sandalwood, jasmine, turmeric, rose, and musk.

How shampoo works

Shampoo cleans by stripping sebum from the hair. Sebum is an oil secreted by hair follicles that is readily absorbed by the strands of hair, and forms a protective layer. Sebum protects the protein structure of hair from damage, but this protection comes at a cost. It tends to collect dirt, styling products and scalp flakes. Surfactants strip the sebum from the hair shafts and thereby remove the dirt attached to it.

While both soaps and shampoos contain surfactants, soap bonds to oils with such affinity that it removes too much if used on hair. Shampoo uses a different class of surfactants balanced to avoid removing too much oil from the hair.

The chemical mechanisms that underlie hair cleansing are similar to that of traditional soap. Undamaged hair has a hydrophobic surface to which skin lipids such as sebum stick, but water is initially repelled. The lipids do not come off easily when the hair is rinsed with plain water. Shampoo applied to wet hair is absorbed into the oil/hair interfaces. The anionic surfactants substantially reduce the interfacial surface tension and allow for the removal of the sebum from the hair shaft. The non-polar oily materials on the hair shaft are solubilised into the surfactant micelle structures of the shampoo and are removed during rinsing. There is also considerable removal through a surfactant and oil "roll up" effect.

Composition

Shampoo formulations seek to maximize the following qualities:

  • Easy rinsing
  • Good finish after washing hair
  • Minimal skin/eye irritation
  • No damage to hair
  • Feels thick and/or creamy
  • Pleasant fragrance
  • Low toxicity
  • Good biodegradability
  • Slightly acidic pH, since a basic environment weakens the hair by breaking the disulfide bonds in hair keratin.

Many shampoos are pearlescent. This effect is achieved by addition of tiny flakes of suitable materials, eg. glycol distearate, chemically derived from stearic acid, which may have either animal or vegetable origins. Glycol distearate is a wax.

Surfactants

Surfactants, also known as wetting agents, lower the surface tension of a liquid, allowing easier spreading, and the interfacial tension between two liquids. The term surfactant is a contraction of "Surface active agent".

The major types of surfactants used in shampoos include:

  • Anionic
  • Cationic
  • Nonionic
  • Amphoteric

Ingredient claims

In the USA, the Food and Drug Administration (FDA) mandates that shampoo containers accurately list ingredients. The government further regulates what shampoo manufacturers can and cannot claim as any associated benefit. Shampoo producers often use these regulations to challenge marketing claims made by competitors, helping to enforce these regulations. While the claims may be substantiated however, the testing methods and details of such claims are not as straightforward. For example, many products are purported to protect hair from damage due to ultraviolet radiation. While the ingredient responsible for this protection does block UV, it is not present in a high enough concentration to be effective. Shampoos made for treating medical conditions such as dandruff are regulated as OTC drugs.[2]

Vitamins

The effectiveness of vitamins, amino acids and "pro-vitamins" to shampoo is also largely debatable. Vitamins and amino acids are the building blocks of proteins and enzymes within the body. They are those substances our bodies are incapable of synthesizing from other substances. While vitamins may be able to penetrate cells through the skin, amino acids and proteins are too large to enter a cell outside the bloodstream, and they can have no effect on dead tissue. Proteins are constructed from amino acids following an RNA blueprint inside the cell. A strand of hair is a long protein chain continually being added to at the root. The only way for an amino acid to be of any use is to be intentionally bound to other amino acids in a specific fashion by a living cell. Hair is not alive, and there is no possibility for an amino acid or protein to have any permanent effect on the health of the strand.

The case for vitamins is not as well understood. Some have demonstrated a moderate effectiveness in improving the health of skin [1], but most likely the benefit is derived from the effect of vitamins on living cells below the epidermis. Extending this benefit to hair, the vitamins and minerals could improve the health of new hair growth, but the benefit to existing hair is unsubstantiated. However, the physical properties of some vitamins (like vitamin E oil or panthenol) would have a temporary cosmetic effect on the hair shaft while not having any bioactivity

Specialized shampoos

Dandruff

Cosmetic companies have developed shampoos specifically for those who have dandruff. These contain fungicides such as zinc pyrithione and selenium sulfide which reduce loose dander by killing Malassezia furfur. Coal tar and salicylate derivatives are often used as well.

All-natural

Some companies use "all-natural", "organic", "botanical", or "plant-derived" ingredients (such as plant extracts or oils), combining these additions with one or more typical surfactants. The effectiveness of these organic ingredients is disputed.

Alternative

Alternative shampoos, sometimes labeled SLS-free, have fewer harsh chemicals - typically none from the sulfate family. They are claimed to be gentler on human hair.

Infant

Shampoo for infants is formulated so that it is the same pH level as the eye, thus less irritating if it were to get into the eyes. Most contain sodium laureth sulfate and/or sodium lauryl sulfate, the mildest surfactant of the sulfate family. Alternatively, infant shampoos may be formulated using other classes of surfactants, most notably non-ionics which are much milder than any charged anionics used. (http://www.happi.com/formulary/2004/12/#Baby%20Shampoo)

Animal

Shampoo for animals (such as for dogs or cats) should be formulated especially for them, as their skin has fewer cell layers than human skin. Cats' skin is 2-3 cell layers thick, while dogs' skin is 3-5 layers. Human skin, by contrast, is 10-15 cell layers thick. This is a clear example of why one should never use even something as mild as baby shampoo on a cat, dog, or other pet.

Shampoo intended for animals may contain insecticides or other medications for treatment of skin conditions or parasite infestations such as fleas or mange. These must never be used on humans! It is equally important to note that while some human shampoos may be harmless when used on animals, any haircare products that contain active ingredients/drugs (such as zinc in antidandruff shampoos) are potentially toxic when ingested by animals. Special care must be taken not to use those products on pets. Cats are at particular risk due to their instinctive method of grooming their fur with their tongues.

Traditional Shampoos

Indonesia

Early shampoos used in Indonesia were made from rice husk and rice straw (merang). The husks and straws were burned into ash, and the ashes (which have alkaline properties) are mixed with water to form lather. The ashes and lather were scrubbed into the hair and rinsed out - leaving the hair clean, but very dry. After shampooing, Indonesians applied coconut oil to remoisten the hair. [3]

Trivia

  • The British Indian comedy show Goodness Gracious Me made a skit about "Mr Everything Comes From India" sitting on the verandah with his son who remarked that it was a nice English summer afternoon. "Mr Everything Comes From India" then blows the lid as he insists "the Queen's language" is rubbish because words like "verandah" and "shampoo" are really Indian words.
  • Ginger Rogers is famous for one scene in the movie Swing Time (1936). While shampooing hair, Fred Astaire sings "Just the Way You Look Tonight." This is considered a memorable scene.
  • In the movie Billy Madison starring Adam Sandler, Billy conducts an argument in his bath between his shampoo and conditioner, with shampoo claiming "shampoo is better, I go on first and clean the hair!" Conditioner rebuts, "conditioner is better, I leave the hair silky and smooth!"
  • The foamy effect achieved by massaging shampoo into the hair is purely aesthetic. The foam itself does nothing to clean the hair and is a byproduct of the ingredients.

See also

  • List of shampoos and conditioners
  • Hair conditioner

References

  1. ^ http://www.pg.com/science/pbi_pert.jhtml
  2. ^ http://www.fda.gov/cder/offices/otc/default.htm
  3. ^ Kompas, Agar Rambut Selalu Sehat, 11 April 2004. (Indonesian)
Retrieved from "http://en.wikipedia.org/wiki/Shampoo"