Skincare Sun Protection and SPF

Question 1

What does SPF stand for in sunscreen products?

Accepted Answer

Sun Protection Factor

Answer

SPF stands for Sun Protection Factor and measures how well a sunscreen protects against UVB radiation that causes sunburn.

Question 2

What type of UV radiation is most responsible for causing sunburn?

Accepted Answer

UVB rays

Answer

UVB rays have shorter wavelengths that penetrate the epidermis and are the primary cause of sunburn and surface skin damage.

Question 3

Which type of UV rays are associated with premature skin aging and can penetrate glass?

Accepted Answer

UVA rays

Answer

UVA rays penetrate deep into the dermis and are associated with photoaging, wrinkles, and pigmentation changes; they also pass through glass.

Question 4

What does 'broad-spectrum' sunscreen mean?

Accepted Answer

It protects against both UVA and UVB rays

Answer

Broad-spectrum sunscreens protect against both UVA (aging) and UVB (burning) rays, offering comprehensive UV protection.

Question 5

According to the American Academy of Dermatology, what is the minimum recommended SPF for daily use?

Accepted Answer

SPF 30

Answer

The AAD recommends a minimum of SPF 30 for daily use, which blocks approximately 97% of UVB rays.

Skincare Practice Test