I researched this a year ago, when I was trying dry brushing myself. I found my notes (thank god for computers!) Here they are:
โข Use a soft natural fiber brush, a loofah sponge or a rough towel. Most nylon and synthetic brushes are too sharp and may damage skin.
โข Always dry brush your dry and naked body before you shower or bathe because you will want to wash off the impurities from the skin as a result from the brushing action.
โข Stroke toward your heart.
โข Use light pressure in areas where the skin is thin and harder pressure on places like the soles of the feet.
โข Use extremely light pressure over swollen areas.
โข Avoid sensitive areas and anywhere the skin is broken such as areas of skin rash, wounds, cuts, and infections.
โข Finish up with your regular shower and end with three hot and cold cycles. That means turning on the water as hot as you can take it for several seconds, then as cold as you can handle it, then hot, then cold for three cycles. End with either hot or cold. This will further invigorate the skin and stimulate blood circulation, bringing more blood to the outer layers of the skin.
โข After getting out of the shower, dry off vigorously.
โข Clean your skin brush using soap and water once a week. After rinsing, dry your skin brush in an open, sunny spot to prevent mildew.