Cosmetic Therapy

Question 1

Hydroquinone decreases melanocyte pigment production through degradation by auto-oxidation of melanin , tyrosinase and phenol oxidases into ROS, semiquinones and quinones

Answer 1

T

Question 2

Hydroquinone is often combined with topical skin exfoliant eg. glycolic acid to enhance abs and apparent concentration of Hydroquinone

Answer 2

T

Question 3

Dihydroxyacetate is a skin pigmenting product

Answer 3

T

Question 4

Combars are synthetic detergents and fillers with less than 10% soap

Answer 4

False

This a syndet bar

Question 5

Emollients increase water content of epidermis and s. Corneum

Answer 5

F
Moisturizers do this
Emollients simply make skin smooth and soft

Question 6

Hydroquinone

Is 1,4-dihydroxybenzene

Answer 6

T

Question 7

Major oxidizer of hair bleaching agent is hydrogen peroxide

Answer 7

T

Question 8

How does dihydroxyacetone work ?

Answer 8

Interacts with free Amino acids present in sweat and keratin
This releases melanoidin a brown substance
Sun protection is minimal spf~2

Question 9

All detergents are skin irritants to a degree

Depending on ability to extract intercellular lipids and alter s. Corneum barrier function

Answer 9

T