Hydrotherapy is the use of water – both hot and cold – to treat a number of conditions in the body: an ice-pack on a sore muscle, a cool washcloth on a fevered brow, a long soak in a hot bath after a stressful day, to name a few. Years ago, when I was 15 and working my first summer job away from home, I met a somewhat older woman (I think she was all of 19) who had gorgeous hair. I asked her what her secret was and she told me that after washing it she would turn the hot tap off and make the final rinse of her hair in purely cold water. I took her word for it, and have employed this method over the years, but I always wonder in the back of my mind if she wasn’t playing a dirty trick on a clueless kid – ’cause that final rinse is a shocker!
Fast forward ten years and I was studying hydrotherapy in massage school, where I learned the ability of contrasting water temperatures to aid in “massaging” cells, forcing them to expand and contract and thereby “squeezing” out metabolic waste that may be not be moving with alacrity. In this way, hydrotherapy increases circulation and aids in the detoxification processes of the skin, kidneys, colon, lymphatic system, and liver. It encourages blood flow, smooth muscle contraction, and sweating. Now that advice of using the cold rinse made perfect sense for healthy hair.