The Best Hair Diagram References. The thickest layer of hair is the inner layer, which is responsible for hair strength, color and pigment, and hair texture. Hair follicles cycle through three primary phases:
The thickest layer of hair is the inner layer, which is responsible for hair strength, color and pigment, and hair texture. Shop now buy with prime It is surrounded by the hair follicle (a sheath of skin and connective tissue), which is also connected to a sebaceous gland.
