What is the black dot at the end of a hair?
Ava Arnold
Updated on February 27, 2026
“A black dot is defined as a hair in which the upper part of the hair root remains adherent to the hair-follicle ostium, giving the macroscopic appearance of a macrocomedo.
What is the black thing at the end of a hair?
Club hairs are an end product of final hair growth and feature a bulb of keratin (protein) at the root tip of a strand.Why is there a black dot on my hair follicle?
Black dots correspond to remnants of hair shafts in the follicular ostia and cannot be removed mechanically. They are usually associated with other forms of broken hairs. The second trichoscopic finding is hair dye; if hair is improperly washed, dye can deposit on the scalp and may even penetrate the follicular ostia.What is the dot on end of the hair?
The takeaway.Think of white dots as a different type of split end or perhaps even a precursor to your "standard" split ends: They may not be your classic "Y" frays, but they signify just as much damage has been done to the strand, and they run the risk of continuing the split farther up the shaft.