Years ago, at a Fortune 100 company, I was asked to spend a day working with high potentials candidates for management. There was a woman in her mid-thirties, in accounting, who was constantly overlooked for the next level position. In my first meeting with her, she walked in with pink hair!

Naturally, the hair came up for discussion. I learned that she changed her hair color every week because her evening job required it. However, it appears to be hindering professional advancement in her day job because it comes up often in talks with management. The problem is that her hair has become more of a talking point than her professional qualities.

Hair is the frame of the face. For some it is glaring statement of identity. A crowning glory. Take Kim Russell, the star of Americans and before that, Dawson’s Creek. She has long and spectacular curly hair. One day, she cut it very short. It almost cost her career! Her long hair had become her trademark.

Then you have Halle Berry as a completely opposite example. When she was starting out, she changed her long hair to a short pixie cut which ended up defining her brand. The bald head on Bruce Willis has made him more distinguished. So, the crowning glory can sometimes make or break a personal brand.

Recently, I was traveling on a combination of work and vacation time. Several parts of the trip went well. The travel itself was easy and many resources were available to help navigate between work and pleasure. However, when the weather did not cooperate it became challenging leading to lesson number one.

Lesson number one is to never make a decision in haste. For example, take my hasty haircut adventure. The weather plays tricks on my hair. It causes it to lose body resulting in a very flat and straight appearance. So, instead of investing more in products, like a Paul Mitchell Daily Body Boost, I went and got a haircut.

Never go to a salon thinking you will get lucky on a haircut! In my case, what was supposed to be a slight trim turned out as a very bad cut. It took my own hair stylist, who used her magic scissors, to make the cut work. Even with her skills, it will still take a few months, if I am lucky, to get my hair style back to normal. Sub-lesson one…never get an out-of-town haircut unless it’s from a stylist you know or received a reliable recommendation on.

While long hair has been the rage among old and young, shorter hair appears to be making a comeback. Lately I have seen women favoring haircuts to ear and chin lengths for a change. It can make for a fresher look.

If you go short, consider changing your clothing choices. Shorter hair styles can create too bare a look, especially if you have a long neck. Be sure to add collars to your shirts and the appropriate jewelry choices to balance your new appearance.

The question often comes up about whether or not you should color your hair. Coloring hair has become very popular for both men and women. And it is not just about covering the gray. Recently Michelle Obama was on the cover of Parade Magazine with golden highlights in her hair. Years ago, it was considered a theatrical move when an Asian or African American that colored their hair blond or red. Today it is just about a variety of looks.

The color one choses for the conservative environment is best when it is close to the natural look. For those who want to be more fashion focused, chose a color close to your color temperature. If you tend to be warm, going jet black may not be favorable to your skin or clothing choices.

Another example is that if you are very cool in color temperature, selecting a very warm hair color may look cheap. When Elizabeth Taylor when blond for a short period it did not enhance her natural skin tone or the color of her eyes.

In a recent article Midge Wilson, Ph.D., a professor of psychology and women’s studies at DePaul University, talks about the Power Bob hair style. Wilson says the bob is “somewhat of a masculine style” that strikes a balance that’s neither too butch nor too silly.

In a paper on hair and first impressions based on a study funded by Procter and Gamble, study director and Yale University psychology professor Marianne LaFrance, Ph.D., wrote, “Within seconds of meeting you, people begin forming a first impression about the type of person you are, and it’s not your face that gives you away; it’s your hairstyle.”

According to the study, women with shorter hair are perceived as more intelligent and confident than those with longer styles. (You can see Power Bobs on Marissa Mayer, Meg Whitman and Hillary Clinton.)

However, I feel the longer hair is making a move forward. For example, look at the new executive of General Motors, Mary Barra, along with Michelle Obama. Both have a hair style that’s a bit more feminine.

Whatever hairstyle you choose, though, it must make your face the center of attention and not your hair.