Encyclopedia
Reference entry
Physiology
Shedding
Normal daily hair loss, distinct from pathological hair loss.
Soumm · Physiology
Definition
Losing somewhere in the region of 50 to 100 hairs a day is ordinary, and the figure varies with hair length, density and washing frequency.
Seasonal variation is also normal.
When it is worth attention
A sudden and sustained increase, visible thinning, or patchy loss warrants assessment.
See also: Telogen Effluvium, Hair Cycle.
A note on evidence
Hair responds to many things at once: sleep, nutrition, hormonal changes, scalp condition and stress among them. Published here for education only; individual concerns should be discussed with a qualified healthcare professional.