Summarize the following:
If your hair is dry and damaged, limit your use of shampoo. Shampoo can remove oils your hair needs to repair damage, so it's a good idea to cut back on how often you're shampooing your hair.  For example, if you usually shampoo your hair every day, try shampooing it every other day or twice a week instead. If you've done something that has caused damage to your hair, such as coloring it, it's important to avoid shampoo for 48 hours afterward. Applying a conditioner to your hair each day can help make it softer and healthier. You can even apply conditioner twice a day—once in the shower, and then once with a leave-in conditioner after you get out of the shower.  If you have coarse hair, use a moisturizing conditioner. If your hair is dry and brittle, look for a conditioner designed to nourish dry hair. A deep conditioning mask can help replenish dry or damaged hair. Once a week, set aside of a chunk of time to deep condition your hair. Keep doing so until your hair is replenished and healthy again. In the shower, apply a liberal amount of your chosen conditioning mask. How long you leave a mask in place depends on the product. Refer to instructions on your product to see precisely how long you should leave your mask in place. Heat protectant sprays can help protect your hair from the damage that heat styling tools cause. Just spray your hair with one before you style it so it doesn't get frizzy and damaged.

Summary:
Shampoo your hair less frequently. Use a conditioner that's designed for your hair type. Treat your hair with a deep conditioning mask once a week. Apply a heat protectant spray if you're going to use heat styling tools.