Highlights and lowlights are hair coloring techniques used to add depth and dimension to blonde hair. Highlights are created by lightening strands of hair, while lowlights are created by darkening strands of hair. This contrast creates a more natural and flattering look than simply dyeing all of the hair one color.
Highlights and lowlights can be used to achieve a variety of different looks, from subtle and natural to bold and dramatic. They can also be used to correct color problems, such as brassiness or yellowing.