Grey Hairs, Do they Grow Quicker than Normal Hair?

Also, is it a myth or do some people go grey overnight?

Grey Hairs, Do they Grow Quicker than Normal Hair?

No they do not grow quicker but are often of a coarser texture so may stand out more.

Colour is fixed within the root under the skin so in the same way cutting hair does not allow the colour to leak out it cannot merely disappear from stress. Loss of hair very quickly from stress is not unheard of and if more dark than white hairs fall it may give the appearance of greying quickly.

I have long hair and on some there is a line at which the colour stopped being produced within the follicle and they change from mid brown to white.

Grey Hairs, Do they Grow Quicker than Normal Hair?

Once you start going grey it is a downhill process so they seem to grow quicker,and you can go grey quickly,not overnight though-----look at me i am all grey

Grey Hairs, Do they Grow Quicker than Normal Hair?

When you get older your hair slows growing [and may get grey]. Overnight changing to grey is just an expression not a fact.

Grey Hairs, Do they Grow Quicker than Normal Hair?

I disagree with the other answerers.....I have heard of someone litereally going grey overnight, after the shock of losing his parents in a car crash. My friends 11 year old daughter also lost all her hair over a 3 day period, after her sister was murdered................so shock can do strange things.