We do need to stop and think about the kind of impression we make with our hair, the damage we do to our hair by over-styling, and the neglectful appearance that what we show others when we don't do our hair.
Learn to get great hair.
Don't let your roots show. I'm not talking about the normal hair regrowth that happens in between regular salon visits; that's to be expected. I'm talking about six inch dark brown roots with bleach blond ends. If you are trying to grow out your old color, take the time to get the ends tinted back to something close to your natural color. This will prevent that unattractive, obvious line of demarcation. It's usually an easy process and you'll feel better about your appearance as you grow out your old color.
Don't go out with curlers in your hair. It's a little embarrassing and you never know when you're going to run into the president of the PTA at the grocery store.
Don't mix highlights and perms. Highlighting permed hair is a big no-no because most highlights are performed with a bleach product. Applying bleach or bleach products to permed hair will cause dryness and frizz at best, and at worst, well.... You may not have very much hair left to highlight. Choose one or the other, just don't do both.
Don't flat iron your hair to death. I see this all the time, usually in teenage or young 20-something girls. They want perfectly straight, perfectly smooth hair so they flat iron every hair into fabulously flat submission. Unfortunately, that causes the hair to dry out, split, and break off. Instead, learn to love your curls, or at the least, please use a heat protecting spray to prevent damage to the hair, and keep the flat iron on the lowest setting that works.
Don't make yourself a peroxide blond. I'm all for platinum blond, but please don't try to be this blond by yourself. Seek professional help so you don't end up with frizzy, fried tresses that look streaky and dull.
Don't go too long without a trim. Even if you're trying to grow your hair long, you need regular trims. Trims will help keep your lovely locks in great shape, and prevent split ends that will cause your hair to break off faster than it can grow. It will also keep your hairstyle looking fresh and new.
Don't go overboard on styling products. I tell my clients that less is more when it comes to hair products. It is always better to go back and add more gel, pomade, or hairspray than it is to have sticky, icky hair that your significant other would be loathe to run his fingers through.
Don't wear pigtails if you've already graduated from college. Unless, of course, you want to be mistaken for Pippi Longstocking. If you need to pull your hair up, try a low, loose chignon for an easy style that looks grown up and beautiful.
All kidding aside, don't despair if you've committed a major hair mistake. We've all had embarrassing hair moments happen to us at one time or another. Just call your stylist for an updated, fresh look and for a great reason to look in the mirror and like what you see.