In the summer months, hair can get dehydrated by the sun, chlorine and salt water. In the wintertime, things aren't much better, as the cold, dry temperatures and wind can zap the life out of your locks. To keep your hair healthy, lustrous and hydrated all year round, you need to treat it with some tender loving care.

Deep condition once a week
If you have dry hair, you can hydrate it by using a deep conditioning treatment once a week. Deep conditioners are normally left on your hair for 15-30 minutes to penetrate the hair strands and follicles. You can find a variety of deep conditioning treatments at your local drug store. Look for products that contain protein, olive oil and other moisturizing ingredients. You can also make a deep conditioning treatment in your own kitchen. For example, mayonnaise is commonly used to condition hair. Check out these homemade beauty treatments. These fruity recipes will restore moisture and body to your dull, dry hair.

Use a moisturizing shampoo
Some shampoos can strip your hair of its natural oils and moisture. To rejuvenate and hydrate your hair, be sure to use a shampoo that is specifically designed for dry hair. Look for shampoos labeled "moisturizing" or "replenishing," and check the label. Avoid products containing high levels of alcohol, which will dry out your hair even further. Moisturizing shampoos contain oils and other ingredients that will help trap the moisture inside the hair shaft when you wash your hair.

Dry your hair naturally
Blowdryers, flat irons and other heated hair tools cause hair to dry out, become brittle and break. If possible, avoid blow drying your hair altogether. If you don't have time to dry your hair naturally, towel dry your hair halfway by blotting out the moisture, then finish drying it with a blow dryer. Never rub your hair vigorously with a towel. This can cause damage to your hair, particularly if it's already dehydrated.