Honor thy hair type. Your hair type should determine which products to use and how often you should wash, so act accordingly. When choosing a shampoo and conditioner, look for keywords like “volumizing” or “moisturizing” on the label to decide which formula is right for you. Clarifying and volumizing products cleanse and add body to oily hair, while moisturizing and fortifying formulas help restore moisture to dry hair to protect it from the elements. If your hair is dry, don't wash it every day. Some people can even get away with once per week, but twice or thrice a week is a good goal.
Cut split ends down to size. Regular hair trimming helps remove split ends, which can cause breakage when they catch on other ends. This is especially important if your hair is prone to breakage or grows slowly. No need to change your length or style dramatically -- a little snip-snip of an inch or so every three to six months will do.
Kick unhealthy styling habits to the curb. Everyday practices like rough brushing can majorly harm your hair. To reduce damage, trade in your hairbrush for a wide-toothed comb. Tackle tangles by starting at the ends and working your way up toward the roots. For updos, reach for a stylish clip or soft fabric hair tie, which are less likely to cause breakage than a tight rubber band. Cultivate patience when it comes to styling. Wet hair is prone to stretching, which makes it more vulnerable to breakage and cuticle damage. Never attempt to brush hair right out of the shower; opt for a wide-tooth comb if you must detangle wet strands.
Break your addiction to harsh styling products. When used responsibly, chemical treatments like relaxers and dyes are unlikely to harm hair, but overuse them and you'll ruin your hair. Limit use of perms, dyes and relaxers to once every eight to 10 weeks, max.