Washing your hair every day can cause it to get dry and brittle. Each time you shampoo your hair, you wash away the protective oil that keeps it healthy and strong. When you're trying to grow your hair fast, it's best to wash your hair no more than once or twice a week. In between washes, use dry shampoo to keep your roots from looking oily. When you wash your hair, handle it gently. Don't scrub it or wring it out. Rinse with lukewarm or cool water instead of hot. Air drying is really the healthiest choice when it comes to growing out your hair. Drying your hair with a hairdryer eventually weakens the hair shaft and leads to damage. The same goes for other heat styling tools like curling irons, flat irons and hot rollers. After your shower, pat your hair dry with a towel. Don't roughly towel it dry. Comb it out with a wide tooth comb. Apply product, such as leave-in conditioner, then let it fully air dry. When your hair is wet, it stretches and breaks much more easily than when it is dry. That's why brushing your hair when it's wet is so damaging. It leads to breakage, frizz and split ends. Instead, use a wide tooth comb to gently detangle your hair. Begin near the tips and work your way up to the roots, rather than dragging the comb down through your hair to pull out tangles. Dyeing, bleaching, and chemically straightening your hair can cause a lot of damage. It's better to leave your hair in its natural state while you're trying to grow it out. You should also avoid hairstyles that can pull out the hair, like tight weaves or braids. If you're determined to lighten or color your hair, use a natural method that doesn't cause damage. Try lightening your hair with honey or dyeing it with henna. Learn to love your natural look. If your hair is curly or kinky, there's no natural method that will make it look perfectly straight. Fast-growing, free-flowing hair is beautiful. The sun, air pollution, and pool chlorine are among the environmental elements that can damage your hair. If your hair is particularly fragile, it's a good idea to protect it, just as you would your skin. When you go out in strong sun, wear a hat to cover your hair. If you live in a place with high air pollution, cover your hair with a scarf or hat while you're out on the city streets. When you swim in pools, wear a swim cap to protect your hair from chlorine.

Summary:
Shampoo your hair less often. Don't use heat styling tools. Never brush your hair when it's wet. Avoid harsh hair treatments and styles. Protect it from the elements.