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Information @ a Glance
  • Dyes are formulated to give hair long-lasting and richly hued colors, but several factors — from mechanical to environmental — can accelerate color changes and fading.
  • In general, hair dyes include dyes, modifiers, antioxidents, alkalizers, soaps, ammonia, wetting agents, fragrance, and a variety of other chemicals used in small amounts that impart special qualities to hair (such as softening the texture) or give a desired action to the dye (such as making it more or less permanent).
  • The four most common classifications of hair colouring are permanent, demi-permanent (sometimes called deposit only), semi-permanent, and temporary
  • The first commercial hair-coloring product was invented by Eugene Schuller in 1909.
  • In the recent years, the demand for hair dye has been increasing. More and more people are concerned with the color of their hair, whether it is to hide gray hair or to experiment with new colors.
  • Other chemicals used in hair dyes act as modifiers, which stabilize the dye pigments or otherwise act to modify the shade.
  • Most permanent hair colouring technology uses a 150-year-old approach that uses p-phenylenediamine (PPD), a chemical that produces darker,
    browner shades when exposed to air
  • A great majority of the dyes used in hair colouring are known as oxidation hair dyes.
  • Oxidation dyes, the more permanent of the two groups, are produced directly on the hair by oxidizing aromatic diamines such as para-phenylenediamine or 2,5-diaminotoluene with an oxidizing agent.
  • New understandings in genetics and biology and the role of DNA in dictating the color, condition and health of hair are taking hair-coloring technology into a whole new realm.
  • Scientists are looking into hair-coloring techniques of the future, including nano-sized colorants and substances that stimulate the genes to produce melanin pigment that colors hair
  • New discoveries in hair biology and coloring chemistry have led to significant advances in hair coloring products and possibilities, reducing
    the trade-o s in hair health.
  • Extensive studies have concluded that hair colorants are safe when used as directed and pose no health risk to pregnant women, unborn babies or infants.

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