Clarifying

If you are not a regular product user eg. mousse, gel, spray; maybe you just use it for date night. You should clarify your hair after each sporadic use. If you use it daily, you should clarify weekly.

Paul Mitchell has a clarifying shampoo called Shampoo 3. Or you can make your own.

#1 Mix ½ cup of vinegar to 1 quart of warm water. Pour the vinegar cleanse into a cup, container, or even a clean old shampoo bottle. Shake it to make sure that the vinegar is distributed evenly.
#2 For normal hair, shampoo as normal. Before you use your conditioner, apply the vinegar solution. Make sure to penetrate down to the roots. Rinse the vinegar solution out of your hair. This will clarify your hair. Apply conditioner as normal.
#3 To clarify oily hair, shampoo and condition the hair as normal. After removing all the conditioner, apply the vinegar solution. Make sure to massage down to the roots. Rinse like a regular shampoo and remove excess.
#4 Dry and style your hair as normal. You will not have to do anything additional to see results in your hair. You will notice your hair more shine and body than normal. You will be surprised with how clean your hair is.
#5 Repeat the treatment weekly. Repeating it weekly allows your hair to stay looking its best.

I have heard of people changing their shampoos from "time to time, because they stop working". Clarifying weekly will make it so that is not necessary.