Freckle or mole
Freckle/mole
There is a dye molecule (melanin) which is added to the hair as it is grown. The concentration of that substance gives hair its color - when the body stops adding melanin the hair goes gray and then white (the true color of hair).
Melanin
Melanin
You can't increase the amount of melanin in your skin. It's just that more melanin is seen on your skin when you're in the sunlight to protect it.
Melanin protects a nuclear cell's DNA.
A localized concentration of melanin is referred to as a freckle.
a mole or freckles
a freckle or a mole.
A freckle or mole.
Because of excess melanin concentration
Skin color is determined by a chemical in the skin called Melanin. This is a pigment that protects the skin from UV rays. The higher concentration of Melanin people have, the darker their skin looks.
No, because a tan is your skin having a higher concentration of melanin in it, the tattoo ink doesn't change.
There is a dye molecule (melanin) which is added to the hair as it is grown. The concentration of that substance gives hair its color - when the body stops adding melanin the hair goes gray and then white (the true color of hair).
melanin is black pigment found in the epidermisMelaninMelanin
Melanin gives color to the skin, hair, and iris of the eyes. Levels of melanin depend on race and amount of sunlight exposure. Sun exposure increases melanin production - to protect the skin against harmful ultraviolet rays. In addition, hormonal changes can affect melanin production.
melanin v
Melanocytes produce melanin.