Hair brushing The thing about hair brushing is that you can do it at home, but there are steps you should take before brushing to keep your hair from being damaged. If you have ever been to a hairdresser for hair brushing, you have noticed that your hairdresser moisturizes your hair by spraying a liquid before you start brushing. Note that the liquid sprayed on your hair is not water; Rather, it is a combination of water and emollient, the amount of which can be considered a quarter cup of emollient and a fifth of water.