12. Distilled water with a pH of 7 is considered:

48. All of the following statements about lighteners are true EXCEPT:

If a food source is available, bacteria can thrive in all of the following areas EXCEPT environments that are:

9. Which of the following biochemical compounds form components that fill the intercellular spaces in the skin?

19. Mixtures of fats and oils converted to fatty acids by heat and then purified fall under which of the following cosmetic classifications?

The system that controls the circulation of the blood and lymph through the body is called the:

What is a highly contagious viral infection that causes an eruptive, blister-like cluster around the mouth, nose or genital area?

A primary component of skin cells is a protein substance called:

Which of the following skin conditions exhibits a lack of moisture characterized by superficial dryness, flakiness and lines?

27. The non-polar end of an emulsifier, which loves oil and hates water, is called: