Application should include

• following manufacturer specifications
• applying lightener to new growth of the hair shaft
• testing for lightening results to match previously lightened hair
• rinsing lightener from the hair with cool water
• shampooing the hair with acid-balanced shampoo
• reconditioning the hair
• towel drying the hair
• reexamining the scalp and hair
• applying toner, if necessary
• cleaning and sanitizing implements and the work area.

Process/Skill Questions:

• What is the line of demarcation?
• Why is it important to lighten the new growth first?
• Why are cream lighteners generally used?
• What is the correct size of subsection for a retouch procedure?
• How would you apply toner to a lightening retouch application?