Sunscreen and photoaging

Question 1

Sunburn

Answer 1

acute reaction to excessive UV exposure
-reddness, 3-5 hours ater
-usually ressolved in 72 hours

Question 2

Suntan

Answer 2

-melancytes in skin to generate and distribute melatonin
-immediatte tanning lasts 3-4 days
-delayed tanning

Question 3

What is delayed tanning?

Answer 3

protective mechanism for skin to to diffuse and absorb addition radiation. Lasts 10-30 days

Question 4

What is photoaging?

Answer 4

-wrinkling and yellowing of skin, less elastic, dry and thickened, spider vessels, small hemorrhages under the skin, skin growth

Question 5

Non drug sun exposure methods

Answer 5

-sun avoidance
-protective clothing
-wide brim hat
-sunglasses(protect eyes from cataract formation)

Question 6

Sunscreen dosing

Answer 6

-face/neck: 1/2 tsp(nickle size)
-arms/shoulders:1/2 tsp to each side of body
-torso:1/2 tsp front and back
-legs: 1 tsp on each side

Question 7

How often apply sunscreen

Answer 7

-15 min before going outside
-every 2 hours after
-after each episode of swimming, towel drying, or excessive sweating
-water resistant: after 40-80 min of swimming

Question 8

Children and sunscreen

Answer 8

-use on 6 months and older
-keep little ones out of sun
-use physical product on younger children

Question 9

AHA, BHA uses

Answer 9

uses for photoaging prevention and treatment

Question 10

AHA, BHA side effects

Answer 10

-more sensitive to sun
-skin irritation

Question 11

How to use AHA or BHA products

Answer 11

-apply to completly dry skin( XXX after wash/dry face)
-patch test
-don’t use in pregnancy

Question 12

Topical retinoids MOA

Answer 12

increase collagen
production & increase cell
size in epidermis 
minimizes fine lines, less
coarse skin texture,
improves elasticity