Skin Care

Question 1

Routes of skin penetration

Answer 1

• Transfollicular
• Direct transdermal
• Via eccrine gland

Question 2

Delivery is difficult due to _____________, which is effective due to ___________

Answer 2

• effective barrier

- intercellular lipids

Question 3

Solubility parameter of SC

Answer 3

8

Question 4

Penetration depends on

Answer 4

• polarity of active
• charge of active
• hydration of SC (more hydrophilic materials)

Question 5

Facial toner is a

Answer 5

solution

Question 6

Clay mask is a

Answer 6

suspension

Question 7

Triclosan is an

Answer 7

antibacterial cleanser

Question 8

Peel off masks are based on

Answer 8

polyvinyl alcohol

Question 9

% range of emollients for creams/lotions

Answer 9

1%-80%

Question 10

% range of surfactants for creams/lotions

Answer 10

1%-20%

Question 11

% range of humectants in creams/lotions

Answer 11

1%-10%

Question 12

Sorbitan esters are used for ____ emulsions

Answer 12

W/O

Question 13

Polysorbates are used for ____ emulsions

Answer 13

O/W

Question 14

Types of acties in acne preparations

Answer 14

• Benzoyl peroxide
• Salicylic acid
• Sulfur

Question 15

what type of active is zinc oxide?

Answer 15

skin protectant

Question 16

what type of active is benzocaine?

Answer 16

external analgesic

Question 17

anti-perspirants are based on

Answer 17

aluminum salts

Question 18

Hari growth is based on

Answer 18

minodixil

Question 19

Loss on drying @ 105 degrees celsius provides info on

Answer 19

water and volatile solvents

Question 20

Ash @ 800 degrees celsius allows you to

Answer 20

distinguish between inorganic and organic residue

Question 21

UVA range

Answer 21

320-400 nm

Question 22

UVB range

Answer 22

290-320 nm

Question 23

UVC range

Answer 23

200-290 nm

Question 24

which type of rays are responsible for tanning and chronic damage

Answer 24

UVA

Question 25

which type of rays are responsible for burning, acute and chronic damage

Answer 25

UVB

Question 26

How far does UVB penetrate

Answer 26

epidermis

Question 27

How far does UVA penetrate

Answer 27

dermis

Question 28

Examples of sunscreen actives

Answer 28

• avobenzone
• cinoxate
• octocrylene
• Octisalate
• Titanium dioxide
• Zinc oxide

Question 29

SPF is calculated as

Answer 29

(MED with product @ 2 mg/cm2) / (MED untreated)