Lack of consistency and taking too many short cuts causes an inconsistent hair color. I feel customer cards are very important for recording formulas and cheat notes. Make sure that when your hairdresser formulates a color that it is immediately written down. Design the color to fit the hairstyle. Ask your stylist if he or she has changed their color inventory to a different brand. A good stylist will ask if there will be any changes to the color service. When changing your style, your color design has to change but not your color or highlights. I prefer to suggest a winter, spring, summer or fall color to my clients. Porosity is always a key factor in hair color. The way the client is taking care of the color is also very important. Using the right treatments is a must. Styling lotions are very important when you are blow drying. Remember in hair color the client must protect the hair from the sun and heat of the blow dryer. This and not skipping your regular appointments will vastly improve the length of the hair color. Permanent hair color is permanent, not the tone of the hair color. When a customer comes to me for hair color correction, there must be a follow-up appointment. This is basically to see the condition of the hair and the fade hair color or tonal value. Corrective Hair color is a step-by-step approach to a final goal. There are no promises, only a good plan from the stylist and client.