Hair appears dry and rough after doing nutrition generally about three days after you can wash your hair. In the process of washing hair must pay attention to the techniques with the gentle massage of the scalp can effectively clean the scalp, so that the scalp dry, to avoid oil secretion caused by pore clogging caused by hair loss. After three days of nutritional scalp nutrition has been basically absorbed, the hair follicles began to produce oil, at this moment need to wash the hair. Choose a mild shampoo, shampooing at night during the active scalp cells can promote the repair of scalp cells as well as regeneration, in general, the summer week to wash about 3 times, the fall and winter seasons can reduce the number of shampooing, but also need to pay attention to, too frequent shampooing can cause a reduction in the secretion of scalp oil, scalp environmental balance disorders, resulting in a vicious cycle, triggering seborrheic dermatitis.