Chapter 197 - Photoprotection

Question 1

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
PABA

Answer 1

Organic Filters: UVB

Question 2

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Padimate O (Ethylhexyl dimethyl PABA)

Answer 2

Organic Filters: UVB

Question 3

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Octinoxate (Ethylhexyl methoxycinnamate)

Answer 3

Organic Filters: UVB

Question 4

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Cinoxate

Answer 4

Organic Filters: UVB

Question 5

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Octisalate (Ethylhexyl salicylate)

Answer 5

Organic Filters: UVB

Question 6

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Homosalate

Answer 6

Organic Filters: UVB

Question 7

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Trolamine salicylate (Triethanolamine salicylate)

Answer 7

Organic Filters: UVB

Question 8

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Octocrylene

Answer 8

Organic Filters: UVB

Question 9

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Ensulizole (Phenylbenzimidazole sulfonic acid)

Answer 9

Organic Filters: UVB

Question 10

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Oxybenzone (Benzophenone-3)

Answer 10

Organic Filters: UVA

Question 11

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Sulisobenzone (Benzophenone-4)

Answer 11

Organic Filters: UVA

Question 12

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Dioxybenzone (Benzophenone-8)

Answer 12

Organic Filters: UVA

Question 13

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Avobenzone (Butyl methoxydibenzoylmethane)

Answer 13

Organic Filters: UVA

Question 14

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Meradimate (Menthyl anthranilate)

Answer 14

Organic Filters: UVA

Question 15

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Titanium dioxide

Answer 15

Inorganic Filters

Question 16

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Group
Zinc oxide

Answer 16

Inorganic Filters

Question 17

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Stains clothing; not widely used

Answer 17

PABA

Question 18

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Most commonly used PABA derivative; photounstable

Answer 18

Padimate O (Ethylhexyl dimethyl PABA)

Question 19

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Most widely used UVB filter; photounstable

Answer 19

Octinoxate (Ethylhexyl methoxycinnamate)

Question 20

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Weak UVB absorbers; improves photostability of other filters

Answer 20

Octisalate (Ethylhexyl salicylate)

Question 21

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Weak UVB absorbers; good substantivity—used in water-resistant sunscreens and hair-care products

Answer 21

Trolamine salicylate (Triethanolamine salicylate)

Question 22

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Photostable; improves photostability of photolabile filters

Answer 22

Octocrylene

Question 23

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Water soluble; enhances sun protection factor of the final product

Answer 23

Ensulizole (Phenylbenzimidazole sulfonic acid)

Question 24

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Most commonly used UVA filter; most common cause of photoallergic contact dermatitis to UV filters

Answer 24

Oxybenzone (Benzophenone-3)

Question 25

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

Photounstable; enhances the photodegradation of octinoxate

Answer 25

Avobenzone (Butyl methoxydibenzoylmethane)

Question 26

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

A weak UVA filter; no sensitization reaction reported

Answer 26

Meradimate (Menthyl anthranilate)

Question 27

TABLE 197-1
Ultraviolet (UV) Filters Listed in the U.S. Food and Drug Administration Sunscreen Monograph

No report of sensitization reaction; photostable; used to enhance photostability of the final product; commonly coated with dimethicone or silica to maintain effectiveness as sunscreen

Answer 27

1. Titanium dioxide
2. Zinc oxide