Dry brushing is an ancient practice that is designed to stimulate circulation and assist in the removal of toxins that your body excretes through your skin. It is believed that the practice of dry brushing assists the lymphatic system in its job of protecting your body from infection and disease. The lymphatic system removes waste products from the cells and transfers them to the bloodstream, where they are circulated out of the body.
Another belief about dry brushing is that the increase in circulation changes the skin texture and can reduce the appearance of cellulite. If you look up dry brushing on the internet you will find dozens of problems that it is supposed to solve. I don't know about all of that. I do know, from my experience, that it does improve the texture of the skin and it feels really great.
The theories about what dry brushing does for your health sound plausible to me, but I don't want to oversell here. The medical data says that the lymphatic system, unlike the circulatory system, relies on our movement to kick it into high gear. The circulatory system (blood) has muscles that increase the flow. If you are still and/or wearing tight clothing the data says your lymphatic system slows considerably. Since this is the system that removes waste and distributes white blood cells for healing purposes it deserves our attention. I invite you to try this practice and see what you think.
To get an idea of how this works look at the rudimentary drawing I have included. The process involves brushing from your hands and feet towards the heart. So you start on the bottoms of the feet brushing in one direction only, towards the heart. You control the strength of the stroke. Don't hurt yourself. Your skin may become pink, which is not a problem. You will find that you can take a stronger stroke once you have been doing it for a while. Do not brush any sensitive or broken out areas. Do not brush your neck or face, as this skin is too sensitive. Once you get to your midsection you can brush in a circular motion. Then start at the ends of your fingers and brush up your arms toward your heart. You can find many videos online that show people doing dry brushing. They make it seem like an obsessive process but you don't have to take that to heart. If they seem fanatical - just look at their process and turn it down quite a few notches. We don't need to be crazies about this. It should be an invigorating process that you do before a shower or bath. You can even do it before bed. Plan to make this a part of your daily routine to see results. It is not a one-shot deal.