|
Does
cutting hair promote new growth
It is a common belief that cutting the hair stimulates faster
hair growth or thicker and fuller hair. However, this belief is
not true. Hair fiber is dead, if it is cut there is no way for it
to send a signal back to the hair follicles in the skin to grow
more hair. The studies to prove hair cutting did not stimulate growth
were done back in the 1920s, but the belief that cuting stimulates
more growth still persists today.
Several studies have been conducted where volunteers shaved half
of their beard or scalp hair and left the other half untouched.
The shavings were collected and measured and the hair left untouched
was also measured. The results showed that the amount of hair produced
was exactly the same whether the hair was regularly shaved or not.
Does
cutting hair promote new growth references
- Peereboom-Wynia JD. Effect of various methods
of depilation on density of hair growth in women with idiopathic
hirsutism. Arch Dermatol Forsch. 1972;243(3):164-76.
- Lynfield YL, Macwilliams P. Shaving and hair
growth. J Invest Dermatol. 1970 Sep;55(3):170-2.
- Trotter M. Hair growth and shaving. Anat
Rec. 1928;37:373-379
- Seymour RJ. The effect of cutting upon
the rate of hair growth. Am J Physiol. 1926;78:93-8
- Bulliard H. Influence de la section et
du rasage repete sur l'evolution du poil. Annales de Dermatologie
et de Syphiligraphie. 1923;Series 6:386-91
|
