The only thing that brushing your hair may do is help
stimulate the scalp which may aide in hair growth and certain brushes like boar
bristle brushes help spread the natural oils from your scalp which can help
nourish your hair. Brushing may also help get rid of tangles. You can also
stimulate your follicles by doing scalp massages so you don’t need to brush
your hair for this reason.
For curly hair brushing is NOT the best thing to do, curly
hair responds better to gentle detangling using a comb, it is better for your
hair because it doesn’t cause as much breakage. Curly hair tends to be a bit
dry and brushing curly hair can cause a lot of damage in fact I never brush my
hair when it is curly. You are getting frizz because by brushing your curls you
are separating them and making them more fuzzy, to keep your curls nice and
formed you should style your hair when it is wet, gently comb with a wide tooth
comb, apply your leave in products and style as you like and then do not handle
your hair until it sets and dries.
Not all hair types react the same to certain styling so some
people may have hair types where brushing isn’t necessarily bad but curly hair
and brushing isn’t usually a great idea. The more tightly curled your hair is
the more damage brushing can do. If you do like brushing your hair be gentle
and use a good quality brush but it will wreck your curly hairstyles.