W
Well the root isn't dead, but the actual hair is. Common knowledge. I thought.
The hair of humans and fur of animals are one of the main characteristics of what is deemed a mammal.
Hair is made mostly of a protein called keratin.
Hair fibers or strands, grow from an organ in the area under the skin called a follicle, which is found in the dermis skin layer.
The only "living" part of a hair is found in the follicle as it grows. The hair strand above the skin has no biochemical activity and so is considered "dead".
Fun Hair Facts for Kids - Interesting Information about Hair
The hair of humans and fur of animals are one of the main characteristics of what is deemed a mammal.
Hair is made mostly of a protein called keratin.
Hair fibers or strands, grow from an organ in the area under the skin called a follicle, which is found in the dermis skin layer.
The only "living" part of a hair is found in the follicle as it grows. The hair strand above the skin has no biochemical activity and so is considered "dead".
Fun Hair Facts for Kids - Interesting Information about Hair