Double Process is typically used when lightening hair by more than two shades. First the hair is bleached to remove natural or colored hair pigments, and then pigment is added into the hair to create the desired shade.
Hair highlighting/lowlighting refers to changing a person’s hair color, using lightener or haircolor to color hair strands. There are four basic types of highlights: foil highlights, hair painting, frosting, and chunking. Highlights can be done in natural or unnatural colors.
Hair extensions are methods of lengthening one’s hair by incorporating artificial hair or natural hair collected from other individuals. Hair extensions can also be used to protect one’s natural hair. These hair techniques are advanced and are used to change the hair drastically without looking unrealistic.