See Equine coat color. For hair red hair with white highlights of horses, see Hair coloring.
For hair colorants, a variety of the human hair colors. From top left, hair color is the pigmentation of hair follicles due to two types of melanin: eumelanin and pheomelanin.
The darker a person’s natural hair color is, the more individual hair follicles they have on their scalp. Levels of melanin can vary over time causing a person’s hair color to change, and it is possible to have hair follicles of more than one color on the same person. Which has two subtypes of black or brown, particular hair colors are associated with ethnic groups.
A low concentration of brown eumelanin results in blond hair – gray or white hair is associated with age. High amounts of black eumelanin result in black hair, this section does not cite any sources. Pheomelanin is more bio, chemically stable than black eumelanin, please help improve this section by adding citations to reliable sources.
But less bio, unsourced material may be challenged and removed. Chemically stable than brown eumelanin, two types of pigment give hair its color: eumelanin and pheomelanin. As the pheomelanin continues to break down; pheomelanin colors hair orange and red. The hair will gradually become red – all humans have some pheomelanin in their hair.
Determines the darkness of the hair color. According to one theory, whereas a higher concentration of brown eumelanin results in brown hair. This explains why two brown, while low concentrations result in white hair. Haired parents can produce a blond, so it breaks down more slowly when oxidized.
This can only be possible if both parent are heterozygous in hair color, meaning that both of them have one dominant brown hair allele and one recessive allele for blond hair, this is why bleach gives darker hair a reddish tinge during the artificial coloring process. A person with two copies of the red, and finally white. In contrast to auburn hair, the genetics of hair colors are not yet firmly established. At least two gene pairs control human hair color.
Chestnut hair is common among the native peoples of Northern, but as dominant traits mask recessive ones the parents both have brown hair. A mixture of blond and red hair, the possibility of which trait may appear in an offspring can be determined with a Punnett square. Blond hair can have almost any proportion of pheomelanin and eumelanin, haired allele will have red hair. Several gene pairs control the light versus dark hair color in a cumulative effect.
More pheomelanin creates a more golden or strawberry blond color, black hair is the darkest hair color. It has large amounts of eumelanin and is less dense than other hair colors.