yes but you have to dry it before or it look greasy :O
yes
Yes, you can wash your hair on Sunday.
No
If you straighten your hair everyday... yes it can damage your hair. so let your hair be natural for a few days before straightening again!
Half No, You can not straighten a dolls hair with a straightening iron but you can boil wash it straight.
Straightening.
The straightening iron will probably do less damage to your hair than a straightening kit. The straightening kit contains chemicals, but a straightener is just heat.
OIL
My hair was between my shoulder blades before i cut it to my chin. I left the treatment in my hair for two weeks w/flat iron it everyday. After 2 months later my hair is below my shoulder now. And make sure to wash hair at the least every two weeks with low sulfate shampoo and conditioners.
Usually it will make your hair look crispy, and the hairspray will burn. Spray hairspray from arms-length away AFTER you finish straightening your hair.
Straightening hair does not damage color if one follows the straightening directions. For frequently asked questions about hair straightening visit http://www.hairboutique.com/tips/tip086.htm.
To keep hair in place or use before straightening/curling hair to help straighten/curl