Mothers used to instruct their daughters to brush the hair at least 100 times before going to bed,
promising with tresses shinning brightly. Obedient girls were well rewarded: their hair did indeed take
on an attractive sheen.
The reasons for this were once thought to be the polishing effect of the bristles, likened perhaps to
that of a mild abrasive on metal. In fact, brushing stimulates oil glands in the scalp, making the hair
more shiny; also it helps to remove dust and dandruff that might otherwise give the hair duller
appearance. But don’t be overzealous. Trichologists warn that too much brushing, especially with a hard
brush, will do more harm than good, thinning the hair and splitting the ends.