Summarize the following:
Brittle, thin hair that's been damaged by over-processing can be extremely aging. If you've been coloring your hair frequently and it is starting to feel a bit like brittle straw, skip your next color session. Give your hair a few weeks of recovery time before coloring it again. In the meantime, use plenty of hydrating hair products and protein treatments to get your hair's strength back up. These can severely damage color-treated hair, especially professional-grade tools. Try to limit the use of heating tools to three times per week. Whenever you do use these tools, always use heat protection hair products along with them. Invest in a good heat protection spray, which should be applied before you use the heating tool. Hold your blow dryer no closer than 24 inches from your head during use. Consider buying an ionic blow dryer, which can dry your hair very quickly and cause less damage then a traditional one. Avoid wet-to-dry straightening irons, which are very damaging. Use sulfate-free shampoos and conditioners, since these ingredients can damage the hair cuticle, especially color-treated hair. Avoid alcohol-based hair products completely, since these are very drying. Use deeply hydrating products to keep your hair moisturized and in good shape. Look for products with hydrating ingredients like glycerin, keratin, Argan oil, coconut oil, vitamin E, Moroccan oil and avocado oil. Use a deep conditioner or hair mask at least once a week. Each time you shampoo and condition your hair, color and moisture are being stripped out of it. The less you wash color-treated hair, the better. Try to make it a day or two in between washings to extend your hair color. Invest in a good dry shampoo, which you can use on the days you don't wash your hair. Dry shampoo wicks away oil and leaves hair lightly scented. Avoid dry shampoos with a powdery finish. These can leave a visible film on your hair, especially if you have dark hair.

Summary:
Skip the color if you have damaged hair. Minimize the use of heat-styling tools. Choose hair products that are beneficial to hair health. Wash your hair less frequently.