Dry Hair :
Each strand of hair has three layers. Dry hair develops when the outer layers can not retain moisture and natural oils. In most cases, dryness of the hair is a result of environmental factors and lifestyle choices. However, in some cases, thyroid issues and other health problems may affect the hair's ability to retain moisture. Exposure to hot, dry, or windy climates is a common cause of dryness. Swimming in salty or chemically-treated water also causes this problem. Lifestyle choices that can damage the hair include blow drying the hair, using hair dyes, straighteners, or curling irons. Making changes in the hair care routine and taking steps to avoid exposing hair to harsh environments can solve hair dryness. However, if the problem persists, it is best to consult an experienced doctor for the right treatment.