| One theory focuses on the fact that people with red hair have a different type of melanin than people with dark hair. |
| The majority of studies on melanin ornaments cited in Table 1 measured only the size of discrete patches of melanic feathers. |
| The color of a person's hair is determined by the amount and distribution of melanin in the cortex of each hair. |
| Melanotan works by boosting melanin, the skin pigment that makes us brown and protects us against skin cancer. |
| A few species of hummingbirds and European Starling are known to produce UV hues with coherently scattering melanin arrays in feather barbules. |
| The body normally converts the amino acid tyrosine into the pigment melanin. |
