How does sun cream help prevent skin cancer?

Sunblock blocks sun: Sun damage causes damage to the skin which leads to skin cancer. Sun block and sun proof clothing prevent the damaging portion of light from damaging the skin's dna. It also prevents the premature aging of skin which occurs with sun damage.

Dr Ali agreed

Block UV Radiation: Sunscreens work by blocking ultraviolet radiation from sunlight. Ultraviolet radiation is one of the primary causes of all 3 major types of skin cancer--basal cell cancer, squamous cell cancer, and melanoma.

Prevents sunburns: Sun screen prevents the uv radiation from the skin from damaging the skin cells. When you get a sun burn the dna in your skin is damaged, and these mutations are what is thought to cause melanoma.

Sunscreen. : Sunscreen helps reduce the amount of ultraviolet radiation absorbed by the skin. It is this radiation that causes normal cells to transform into cancerous cells.