Question 1: What is the pH level of a typical shampoo that is designed for regular use?
pH 2
pH 5-7
pH 8
Correct Answer: pH 5-7
Question 2: Which vitamin is commonly found in shampoos to promote hair health and growth?
Vitamin D
Vitamin C
Biotin
Correct Answer: Biotin
Question 3: Which product not require water and is applied as a powder or spray to absorb oil and dirt?
Dry shampoo
o-rinse shampoo
Waterless shampoo
Correct Answer: Dry shampoo