Permanent Hair Color
Permanent hair coloring does not wash out, it will be permanently altered. It may fade over time, depending on the condition of your hair and how your care for it. The higher the developer that is used the more lift (lightening) will occur. Hair that has been processed with permanent color, can not be lifted (lightened) again with permanent color. Color does not lift color, it will need to be lightened with bleached.
Demi Permanent Hair Color
Demi permanent is a permanent hair color because it does contain the alkaline activating agent. It does not lift (lighten) the hair, it is a deposit only hair color and can lasts up to 25 shampoos. Demi permanent hair color fall between permanent and semi permanent hair coloring. It is gentler on the hair, it is a great option for someone who has chemically treated or damaged hair. It is also used to refresh existing color or for blending grey.
Semi Permanent Hair Color
Semi permanent hair coloring does not lift (lighten) the hair, it slightly opens the cuticle and partially penetrates the hair shaft. Semi permanent hair coloring is used to change the tone within the same natural level (see level chart) or if you want to go darker. Semi permanent color will slowly fade out in a few weeks, there will not be any noticeable line when your natural hair grows out. This is a great option for people who wants a change, but do not want a commitment to color their hair every 6-8 weeks.
Temporary Hair Color
There are different forms of temporary hair color. Rinses, gels, sprays, shampoos and foams. Temporary hair coloring is used for special occasions “halloween” etc. They generally wash out after one shampoo, if the hair is very dry and damaged it may last longer or even be difficult to get out. Temporary hair coloring is usually brighter and more vibrant that other types of hair coloring.