22. Which statement describes ammonia? It is an alkaline agent that raises the pH of hair colorant and can change the hair's texture and curl pattern. b. It regulates the amount of lift in lightener products. c. It is an oxidizing agent that can be used alone to lighten the hair one level. d. It is a developer that has a pH range of pH1.5 to pH3.5 23. When adding natural highlights to brunette hair what is the maximum number of levels the highlighted pieces should be lightened above the balance of the hair? a.one and one half b. two c.four d. three and one half