The incidence of skin cancer has continuously increased in Korea, probably due to sun exposure and increases in
the aging population. Ultraviolet light, a well-known risk factor for skin cancer, can cause DNA damage, mutation,
and immune suppression, followed by abnormal proliferation. To prevent photocarcinogenesis, the appropriate
use of sunscreen should be emphasized. Using broad-spectrum sunscreens with sun protection factor values of 15
or higher and frequent reapplication are recommended. Controversy exists about whether vitamin D synthesis is
inhibited by the use of sunscreen. However, considering that skin cancer most commonly develops on the head and
neck area, applying it to the face and neck is reasonable in terms of balancing the risk-benefit ratio.