On the outside
horses just grow their hair like humans do
no
hair can grow unevenly due to sleeping on only one side of your head. ...if you normally wake up on your right side, your hair doesnt grow.
mane and tail
Yes, horse hair grows back after it is cut. Horses, like many mammals, have hair follicles that continuously produce new hair to replace the old or damaged ones. However, the rate of growth and the quality of the new hair can vary depending on factors such as the horse's health and genetics.
Use mane and tail shampoo
People say that,horse shampoo makes your hair grow and shine,everyone should try it?:)
what's the fastest way to grow out side bangs?
In extreme cases, up to 2metres, 7feet
genes don't determine this, this is something the hair must be 'trained' to do, when a horse is young (foal) you can put weights in the mane, and gels to keep it on one side, it will eventually get weighed down and grow on one side only.
the horses hair can grow about to 5 or 8 inches long
1. Horse Shampoo helps it. 2. Don't cut it. Let it grow out. 3. Don't straighten it, because the straightener will kill your hair and your hair won't grow. 4. Don't dye it either or out anything on your hair that has to do with chemicals.