Practice Question Answers: Sunscreen Agents

1. Which of the following sunscreen agents is most likely to cause a photoallergic reaction on the skin?

a. homosalate

b. oxybenzone

c. PABA

d. padimate O

e. zinc oxide

2. Which of the following sunscreen agents is least likely to cause an allergic reaction when applied?

a. ecamsule

b. octisalate

c. padimate A

d. titanium dioxide

e. trolamine salicylate

3. Of the following, which is/are considered to be an inorganic sunscreen agent?

a. PABA

b. titanium dioxide

c. zinc oxide

d. A, B, and C

e. B and C

4. Sunscreens containing PABA or one of its derivatives may cross-react with which of the following?

a. bananas

b. doxycycline

c. griseofulvin

d. naproxen

e. sulfonamides

5. Which of the following is/are used in sunscreens for UVA protection?

a. avobenzone

b. ecamsule

c. octisalate

d. A, B, and C

e. A and B