As much as you want , but in some cases hair can stop growing like mine ;)
It can damage your hair, but it depends on how long you leave it in your hair or how much you do. Lemon juice is much safer.
Not washing or being in the sun to much and make your hair fade. However, dont dye your hair to much or your hair will start to fall out.
I have lots of hair on my legs
You can do it with any hair dye.
just condition it but not to much if u put to much in ull get greasy hair!!!
Yes.
That depends on how long the hair is...
yes
You lose so much hair when you shampoo is because your old hair gets washed away from your head
Not much
as much as on your head
depending on how you put the hair in and take it out. if done correctly weaves can be a protective style for your natural hair . my hair grows much faster while i have a sew-in weave do to my hair being in braids and im not touching my hair as much