Hair growth occurs in cycles, with a growth phase (anagen), a transition phase (catagen), and a resting phase (telogen).
On average, hair grows about 0.5 inches (1.25 cm) per month or about 6 inches (15 cm) per year.
Scalp hair is the fastest growing hair on the human body, while the hair on the arms and legs is the slowest growing.
Hair colour is determined by the presence of pigments called melanin, with eumelanin providing brown and black hues and pheomelanin providing blond and red hues.
The average person has about 100,000 to 150,000 hairs on their head.
Hair loss is a common condition, with genetics and hormonal changes being the most common causes.
Heat styling, chemical treatments, and excessive brushing or combing can damage hair.
Hair can also reflect overall health, with deficiencies in certain nutrients or conditions, such as thyroid disorders, potentially leading to hair loss or thinning.
Proper hair care, including regular washing, conditioning, and protecting hair from heat and chemical damage, can help maintain hair’s health and appearance.
