hormones.
Ironically, the same hormonal sensitivity that causes scalp
hair to thin can stimulate hair growth in other areas. While scalp follicles shrink, ear follicles may do the opposite.
Longer Growth Cycles
Hair follicles operate on a cycle of growth and shedding. With age, this cycle can slow down. Ear hairs may stay in the growth phase longer and shed less often, resulting in hair that grows longer, coarser, and more wiry.
Thinning Skin
As skin loses elasticity and becomes thinner over time, hair that
