Moisturisers

Question 1

4 types of moisturisers

Answer 1

humectant, emollient, occlusive, skin rejuvenator

Question 2

define emollient with example

Answer 2

penetrates skin and acts as a space filler for example petroleum jelly

Question 3

TEWL stands for

Answer 3

trans-epidermal water loss

Question 4

Ingredients in oil phase

Answer 4

oils, fats, waxes

Question 5

define humectants

Answer 5

hydrophilic & hydrates skin by attracting water molecules, a bit tacky not greasy. ie glycerine, propylene glycol, sodium PCA

Question 6

Routes of penetration

Answer 6

transappendageal, transepidermal

Question 7

Define the transappendageal route

Answer 7

transport via hair follicle/sebaceous gland and sweat glands *important for ions and large polar molecules

Question 8

Define the transepidermal route

Answer 8

molecules cross the intact SC Horny layer

Question 9

two potential routes of transepidermal transport.

Answer 9

transcellular route, intercellular route

Question 10

Define the intercellular route

Answer 10

lipophilic molecules move only through lipid matrix of SC.