Shaving and growing in faster

[Matabiri]

Is there something you can give us to back this up? Isn't all hair dead cells?

Hair is not dead cells: it's primarily a protein called kerotin (the same protein as fingernails). It has no cellular structure, no nerve fibres, and no blood supply. There is no mechanism for any action occuring at one end of the hair (cutting, shaving, whatever) to communicate with the follicle at the other end.

Edit to add: before anyone says, "What about DNA testing of hair?", that's done on follicle cells adhering to the root of hair that's been pulled out. There is no DNA in actual hair, although breakdown products of certain drugs can be excreted through hair, which is why it is sometimes used in drug testing.

 

[sorgoth]

Maybe the growing faster thing is simply due to the relative length...if your hair is 1 mm long, and it grows a couple of millimeters, then it will be 3-4 times as long as before, while if it was already a centimeter long, a couple more millimiters is hardly noticeable.

 

[MrMonty]

Hair is not dead cells: it's primarily a protein called kerotin (the same protein as fingernails). It has no cellular structure, no nerve fibres, and no blood supply. There is no mechanism for any action occuring at one end of the hair (cutting, shaving, whatever) to communicate with the follicle at the other end.

Edit to add: before anyone says, "What about DNA testing of hair?", that's done on follicle cells adhering to the root of hair that's been pulled out. There is no DNA in actual hair, although breakdown products of certain drugs can be excreted through hair, which is why it is sometimes used in drug testing.

Thanks for the info.

I wish I could do a decent scientific study. I'd need some damn good tweezers though and probably a microscope.

Monty