Jill has rinsed her client's relaxer out. She needs to lower the ph level of the chemical relaxer. What kind of shampoo should Jill choose?

Most states require cosmetologists to take a two-part exam to become licensed or certified.  The first part is a written multiple-choice exam covering subjects like skin structure, nail structure, haircutting, facials and sanitation. The second part is a hands-on exam where a cosmetology candidate needs to demonstrate knowledge and skill in like haircutting, color application and manicure.