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  2. Human hair color - Wikipedia

    en.wikipedia.org/wiki/Human_hair_color

    A variety of human hair colors; from top left, clockwise: black, brown, blonde, white, red. Human hair color is the pigmentation of human hair follicles and shafts due to two types of melanin: eumelanin and pheomelanin. Generally, the more melanin present, the darker the hair. Its tone depends on the ratio of black or brown eumelanin to yellow ...

  3. Human skin color - Wikipedia

    en.wikipedia.org/wiki/Human_skin_color

    Human skin color. Human skin color ranges from the darkest brown to the lightest hues. Differences in skin color among individuals is caused by variation in pigmentation, which is the result of genetics (inherited from one's biological parents ), exposure to the sun, disorders, or some combination thereof.

  4. Hair coloring - Wikipedia

    en.wikipedia.org/wiki/Hair_coloring

    A woman with dyed pink hair. Hair coloring, or hair dyeing, is the practice of changing the color of the hair on humans' heads.The main reasons for this are cosmetic: to cover gray or white hair, to alter hair to create a specific look, to change a color to suit preference or to restore the original hair color after it has been discolored by hairdressing processes or sun bleaching.

  5. Why your hair and eye colors change - AOL.com

    www.aol.com/news/2014-07-23-why-your-hair-and...

    Eventually, usually in the 30s, human hair stops producing melanin and begins to turn grey. Basically, it stops adding color to the hair. Gray hair tends to occur earlier in Caucasians and later ...

  6. Greying of hair - Wikipedia

    en.wikipedia.org/wiki/Greying_of_hair

    Changes in hair colour typically occur naturally as people age, eventually turning the hair grey and then white. This normally begins in the early to mid-twenties in men and late twenties in women. More than 60 percent of Americans have some grey hair by age 40. The age at which greying begins seems almost entirely due to genetics.

  7. Fischer–Saller scale - Wikipedia

    en.wikipedia.org/wiki/Fischer–Saller_scale

    The Fischer–Saller Scale, named for eugenicist Eugen Fischer and German anthropologist Karl Saller , is used in physical anthropology and medicine to determine the shades of hair color. The scale uses the following designations: [1] [2] [3] [4]

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