Effects Of The Sun Flashcards
3 types of ultraviolet radiation (uvr)
UVC
UVB
UVA
UVC rays
Shortest but most powerful waves
Don’t penetrate the ozone layer
Carcinogenic
Changes in ozone could lead to more skin cancer
UVB rays
Medium wavelength
Penetrate the epidermis
Reflect on shiny surfaces
Strongest from 10 am to 4pm
Do not Penetrate through glass
(Think B for burn)
UVA rays
Longest rays
Reach the dermis
Do penetrate through glass
Full strength from sunrise to sunset
(Think A for aging)
What is a suntan?
Skin’s response to harmful radiation
Melanin produced
Thickening of epidermal layers to protect deeper layers
Results of long term sun exposure
Wrinkles, dryness, sagging, hyperpigmentation, skin lesions, skin cancer, enlarged pores, permanent redness, dilated capillaries, deep dehydration
Who is at risk for sun damage and skin cancer
Fair skin, people with fitspatrick 1 and 2, family members who have had skin cancer, spend a lot of time outdoors, have moles
Skin cancer warning signs
Asymmetrical, borders irregular, diameter larger than 6mm, evolution changes in moles
What does spf mean
Sun protection factor
Organic sunscreens
Contain carbon
Chemical sunscreens
Absorb uv rays
Inorganic sunscreen
Don’t contain carbon
Physical or mineral sunscreens
Absorb and reflect uv rays