Dry hair is often the result of over-processing, or the overuse of hot tools. Once hair is dried out, it becomes more brittle and is therefore more prone to split ends, breakage and an overall "straw-like" effect. Although it is not always possible to completely rescue damaged hair, with extra care and effort, dry hair can be improved. Diligence to certain hair-care methods and developing good habits can eventually allow your hair to grow in healthier than ever.
Moisturize, Moisturize, Moisturize
Dry hair needs to be re-moisturized to both strengthen it and make it more resilient to breakage, and to create a protective barrier to its delicate core. Those with dry hair should use a deep-conditioning treatment weekly, if possible a heat-activated one to allow the conditioner to penetrate the core. In addition, use a shampoo and conditioner that is specified for dry hair every time you shower to avoid stripping the hair of the natural oils that help protect it.
Limit Use of Hot Tools
Heat is the primary culprit when it comes to dry hair, as it strips the moisture from each strand. Whenever possible, allow your hair to air-dry or mostly air-dry. Keep your blow dryer on a cooler setting if you must use it, and treat your hair with a spray-on heat protectant. Use a wide-tooth comb when brushing during blow-drying, as it reduces breakage on the individual strands.
Substitute cool rollers for hot rollers whenever possible and avoid using hair straighteners or curling irons. Experiment with styles such as pony tails, buns and updos that don't require as many styling implements.
Dye Instead of Bleach
Highlighting your hair can really do a number on it as the peroxide and other harsh chemicals strip the hair's natural oils and bathe each strand in damaging chemicals. If you hair is particularly dry, experiment with your natural color or consider lowlights or vegetable-based dyes, which are less damaging while allowing you to remain stylish.
Regular trims are essential for those with dry hair. The end of each strand of hair is the oldest and therefore the driest or most damaged part of the hair shaft. When hair dries out, it tends to split from the bottom up and ultimately thins it out. Regular trims keep split ends from getting out of control and help you to maintain hair that is healthy-looking instead of dry and wispy at the ends.