well from experience i have found it takes about a day or two depending on the amount that the hair has been exposed to
It never leaves the system. It stays in your cells and hair. Don't use if you want to be clean. You may not realize this but just looking at you someone can tell you use meth. Testing isn't needed.
it is in your bloodstream for days. if you use it just once you will have to be sober for at least a week to get it out of your system
it depends on how much hair is in the brush
depends how long your hair is now
Pretty long
it matters how you wear your hair
Hour
Less time than the hair on your head. hair is hair.
TO DAM LONG!
you have to have certain genes, my hair grows an inch and a half in a month. but it will take about half of a year to grow it really long
Could you check to see how long it takes to system and hair
If you don't have anything that hair could get in the way of, and you take well care of it, it is fine. But if long hair gets in the way of something, or you don't take care of it, it could be bad. But it is your choice if you have long hair or not, because it's your body!