Before you apply the shampoo or hair wash, first rub the palms of your hands together to create a lather from the shampoo and the water already on your hands. Then, apply to your hair starting at the top of your head. Then insert your fingers until the tips of your fingers touch your scalp and massage the shampoo or hair wash outwards toward your forehead. Then place your fingers back on top of your head with the tips touching your scalp and massage the shampoo back towards the nape of your neck and tips of your hair. This way, the shampoo or hair wash will stay in contact with each part of your hair for the optimal amount of time: longest on the parts of the head that produce the oils, and shortest on the tips of the hair which are the driest and most easily damaged.
After you have washed your hair, and given yourself a relaxing head massage in the process, rinse your hair. As a general rule of thumb, you should rinse you hair for three to five times as long as it took you to wash it. You should count this time from when the shampoo or hair wash first touched your hair to when you began to rinse it. If it took you 2 minutes to wash, then it should take you 6 to 10 minutes to rinse it all out. Stand directly under the stream of water and occasionally sweep your hair with your hand, but do not brush when wet as brushing wet hair can damage it.
All of us should be better researched on what makes a high quality shampoo or conditioner and even though it sounds a bit overwhelming, believe me, it’s worth knowing about.